Cycle 4 Accepted Proposals and Targets

*********************************************************************************** SOLAR SYSTEM -------------------------------------------------- =================================================================================== Proposal Number: 04100120 Proposal Title: SPATIALLY RESOLVED X-RAY EMISSION FROM SATURN PI: JAN NESS Subject Category: SOLAR SYSTEM Abstract: We plan to investigate the spatial distribution of X-ray emission from Saturn in order to confirm a former detection from Ness & Schmitt 2000 (A&A, 355, 394) found with ROSAT-PSPC and to verify whether the X-ray emission comes from Saturn's aurora as already found for Jupiter with the HRC-I. This would supply information about the physical origin of the X-ray emission. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- SATURN ACIS-S NONE 70.00 =================================================================================== Proposal Number: 04100190 Proposal Title: MULTIWAVELENGTH OBSERVATIONS OF JUPITER'S AURORAL HOT SPOT PI: RONALD ELSNER Subject Category: SOLAR SYSTEM Abstract: Joint Chandra HRC-I and HST STIS observations in Dec 2000 found: (1) the northern auroral x-ray emission comes from a localized hot spot poleward of the main auroral oval, magnetically connected to regions in the outer magnetosphere beyond 30 Jupiter radii; and (2) the x-ray hot spot pulsates with a period about 45 minutes. The hot spot occurs in a region where both anomalous infrared emissions and bright, transient far-ultraviolet (FUV) 'flares' have been observed. These results are inconsistent with excitation by energetic heavy ions precipitating from the Io plasma torus. We propose simultaneous HST-STIS and Chandra-ACIS-S observations of Jupiter seeking to understand the source mechanisms and energetics of the jovian x-ray aurora. We will also seek simultaneous IRTF observations. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 08:51:12.64 +18:33:36.40 JUPITER ACIS-S NONE 41.70 08:51:45.79 +18:31:25.10 JUPITER ACIS-S NONE 30.30 =================================================================================== Proposal Number: 04100561 Proposal Title: OBSERVATION OF SATURN AND TITAN PASSING IN FRONT OF THE CRAB NEBULA PI: HIROSHI TSUNEMI Subject Category: SOLAR SYSTEM Abstract: Saturn will have a conjunction with the Crab nebula on January 5,2003, which is a very rare event since Saturn passes about 1' away from the pulsar. We propose to observe this spectacular phenomenon with Chandra so that we can apply the X- ray absorption technique to the Saturnian system. There are three bodies involv ed in this conjunction: Saturn, its rings and its satellite, Titan. We will be able to measure the absorption feature of atmospheres of the main body of Saturn and Titan. We can also measure the X-ray reduction ratio at the ring that show s the filling factor within the ring. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:34:29.65 +22:01:00.66 TITAN ACIS-S HETG 10.40 05:34:31.66 +22:00:59.26 TITAN ACIS-S HETG 11.00 05:34:33.78 +22:00:58.90 TITAN ACIS-S HETG 11.00 *********************************************************************************** NORMAL STARS AND WD -------------------------------------------------- =================================================================================== Proposal Number: 04200007 Proposal Title: SPECTROSCOPY OF PRE-MAIN SEQUENCE STARS: TV CRT - ACCRETION OR DYNAMO? PI: CLAUDE CANIZARES Subject Category: NORMAL STARS AND WD Abstract: The only high-resolution X-ray spectrum of a low-mass, pre-main sequence Classical T Tauri star, TW Hya, showed dramatic differences from all other stellar coronal spectra: very cool, sharply peaked temperature distribution, and high density. Abundances were similar to, but more extreme, than other coronae: very weak iron, and very strong neon. We attributed the X-ray emission to accretion, not to a rotationally driven magnetic dynamo. Observations of a weak-lined T Tauri star, TV Crt (HD98800), in the same association will provide a valuable comparison of a young corona w/ little or no accretion but of similar age and evolutionary history. High-resolution studies like these are required to provide a basis for interpretation of imaging surveys of other pre-main sequence systems. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 11:22:05.30 -24:46:39.80 TV CRT ACIS-S HETG 100.00 =================================================================================== Proposal Number: 04200026 Proposal Title: AN ULTRADEEP CHANDRA STUDY OF THE ORION NEBULA (HRC GTO TEAM PORTION) PI: STEPHEN MURRAY Subject Category: NORMAL STARS AND WD Abstract: This is a request to include 100 ks of Guaranteed Time from the HRC GTO Team's allocation with the ultradeep Orion Nebula GO proposal. The full science proposal is presented in the GO Large Project proposal entitled 'An ultradeep Chandra study of the Orion Nebula', with PI Eric Feigelson. We request that both the HRC and ACIS Team GTO proposals and the GO proposal be evaluated and approved or rejected together. The observations must also be scheduled in a single continuous observation (see Remarks). Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:35:16.70 -05:23:24.00 ORION NEBULA CLUSTER ACIS-I NONE 70.00 =================================================================================== Proposal Number: 04200045 Proposal Title: OBSERVATION OF THE CORE OF THE RCRA DARK CLOUD PI: GORDON GARMIRE Subject Category: NORMAL STARS AND WD Abstract: This is the second observation of this star-forming region where ~100 sources were detected in the first observation. This observation will improve spectral data and time variability studies. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 19:01:50.60 -36:57:30.00 RCRADARKCLOUD ACIS-I NONE 40.00 =================================================================================== Proposal Number: 04200048 Proposal Title: CHANDRA ORION MEGASECOND PROGRAM (***ACIS*** TEAM PORTION) PI: GORDON GARMIRE Subject Category: NORMAL STARS AND WD Abstract: This is a request to include 50 ks of Guaranteed Time allocated to the ***ACIS*** Team to the ChOMP. The full ChOMP science proposal is presented in the GO Long Project proposal entitled 'Chandra Orion Megasecond Program' with Eric Feigelson, PI. We request that all ChOMP GTO and GO proposals be evaluated and approved or rejected together. The observations must also be scheduled in a single continuous observation (see Remarks). Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:35:16.70 -05:23:24.00 ORION NEBULA CLUSTER ACIS-I NONE 50.00 =================================================================================== Proposal Number: 04200050 Proposal Title: AN ACIS OBSERVATION OF THE MASSIVE STAR-FORMING REGION RCW 49 PI: GORDON GARMIRE Subject Category: NORMAL STARS AND WD Abstract: We will observe RCW 49, a prominent giant H II region, and its ionizing cluster Westerlund 2, an OB association containing at least a dozen OB stars. Our observation consists of a single ACIS-I pointing, to resolve and study the high-mass stellar population in the cluster ionizing the H II region and to image the bubbles around the two Wolf-Rayet stars. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 10:24:02.50 -57:45:23.00 RCW 49 ACIS-I NONE 40.00 =================================================================================== Proposal Number: 04200052 Proposal Title: CATCHING THE THIRD GENERATION OF YSOS IN THE CEPB/S155 INTERFACE REGION PI: GORDON GARMIRE Subject Category: NORMAL STARS AND WD Abstract: In a single Chandra field we will make a snapshot of the violent interaction of young stars with their natal cloud. We will be able to study the properties of two generation of young stars, one, already emerged from the cloud, and another, deeply embedded into it. The second includes the nearest known candidate of high mass protostellar object (HMPO). Our goals are: to confirm the YSO status of IR sources, compare the spectra and variability for different types of YSOs, search for the extended emission from O-star winds, construct X-ray luminosity and initial mass functions of the emerged generation, become acquainted with the X-ray properties of HMPO; and study the star formation history of this region. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 22:56:47.00 +62:40:00.00 CEP B ACIS-I NONE 30.00 =================================================================================== Proposal Number: 04200106 Proposal Title: THE CORONAL SPECTRA OF POST-T TAURI STARS IN THE NEARBY TUCANAE ASSOCIATION PI: SALVATORE SCIORTINO Subject Category: NORMAL STARS AND WD Abstract: We propose to observe the two X-ray brightest single young (10-20 Myr) late-type stars of the recently discovered nearby Tucanae Association. The collected HETG spectra will allow the unique opportunity of characterizing the properties of coronae of late-type active single stars still on the radiative track while contracting toward the main-sequence. This will allow us to investigate the effect of binarity versus youth in determinig the shape of differential emission measure distribution and abundances of stellar coronae in a region of the age-activity-rotation parameter space still essentially unexplored. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 18:53:05.90 -50:10:49.90 HIP 92680 ACIS-S HETG 75.00 =================================================================================== Proposal Number: 04200107 Proposal Title: MORPHOLOGY OF THE X-RAY EMISSION FROM PROTOSTELLAR JETS PI: FABIO FAVATA Subject Category: NORMAL STARS AND WD Abstract: Following our detection and study of X-ray emission from a shock associated with a protostellar jet (from L1551 IRS5) we propose to observe with Chandra HH 355F and HH 311, two shocks associated with protostellar jets for which previous (unreported) evidence of associated X-ray emission is present. The spatial resolution of Chandra will allow to study the structure and the distribution of the X-ray emission along the extent of the shock front, as well as to perform spatially resolved low-resolution X-ray spectroscopy, thus studying the physical conditions in the two targets, and also assessing their influence on the conditions of e.g. the protostellar accretion disk. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 04:22:04.50 +19:14:37.00 HH 355F ACIS-S NONE 30.00 =================================================================================== Proposal Number: 04200113 Proposal Title: CORONAL STRUCTURES IN YELLOW GIANT STARS PI: F. HARNDEN, JR. Subject Category: NORMAL STARS AND WD Abstract: With three ACIS-S/HETG observations of selected yellow giants of similar masses (equal to about 2 solar masses), we will study the role of "solar-like" magnetic dynamos in generating the X-ray coronae of such stars and explore the response of the coronae to changes in internal stellar structure. Spectroscopic plasma density diagnostics derived from the HETG X-ray spectra will be used to infer characteristics of the coronal magnetic structures of these stars in selected post-main-sequence evolutionary stages, testing whether the size of X-ray emitting structures changes as giants of approximately equal mass evolve from warmer to cooler temperatures through the Hertzsprung gap. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 23:25:22.80 +23:24:14.80 HD 220657 ACIS-S HETG 110.00 =================================================================================== Proposal Number: 04200117 Proposal Title: RESOLVING THE TRIPLE PROTOSTAR/T TAU SYSTEM T TAU NS PI: MANUEL GUEDEL Subject Category: NORMAL STARS AND WD Abstract: We propose to fully resolve the T Tau N/S system in X-rays for the first time, using the HRC-I on Chandra for 60 ks. The two stars are embedded in envelopes and accrete matter in accretion disks. Several Herbig-Haro objects are present, some of which may produce detectable X-rays as well. A third stellar component has recently been identified; it will be resolved by radio interferometry also proposed. Correlated activity in both wavelength regimes will help associate the emission to particular components and will provide insight into high-energy mechanisms in magnetically accreting protostars. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 04:21:59.40 +19:32:06.40 T TAU HRC-I NONE 30.00 =================================================================================== Proposal Number: 04200145 Proposal Title: IMAGING THE JET FROM A HERBIG AE STAR PI: DOUGLAS SWARTZ Subject Category: NORMAL STARS AND WD Abstract: The nearby Herbig Ae star HD 163296 has a strong, possibly x-ray emitting, jet extending 6'' above its accretion disk. The combination of an accretion disk and jet in a relatively old Herbig Ae object, a low extinction due to a lack of association with dark clouds, the presence of Herbig-Haro objects along the jet axis, and an otherwise source-free field make HD 163296 a particularly promising object for imaging spectroscopy with Chandra. We propose a 20~ks non-grating ACIS-S observation of HD 163296 to image the jet, disk, and other structures; to provide constrain the underlying X-ray emission mechanisms; and to probe the nature of the magnetic activity, coronae, and outflows of Herbig Ae systems. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 17:56:21.00 -21:57:22.00 HD 163296 ACIS-S NONE 20.00 =================================================================================== Proposal Number: 04200248 Proposal Title: X-RAY ACTIVITY IN M-TYPE GIANTS PI: MATTHIAS HUENSCH Subject Category: NORMAL STARS AND WD Abstract: We propose to observe four M-type giants detected in the course of the ROSAT all-sky survey in order to confirm the detections, to obtain accurate positions and count rates, and to explore possible X-ray variability with the HRC-I. M-type giants are old, low-mass stars to the right of the X-ray dividing line and are not expected to show magnetic activity and hence X-ray emission at all. Any X-ray detections among such stars would challenge our ideas of coronal structures and late stellar activity in giants, since possible companions are not a reasonable explanation. While two such stars have already been confirmed as X-ray sources with Chandra in AO2, observations of the remaining stars are important to determine the fraction of active M-type giants. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 14:46:06.00 +15:07:54.00 HR 5512 HRC-I NONE 1.90 16:38:45.00 +48:55:42.00 HR 6200 HRC-I NONE 2.70 17:14:39.00 +14:23:25.00 HR 6406 HRC-I NONE 1.00 19:47:27.00 +47:54:28.00 HR 7547 HRC-I NONE 2.60 =================================================================================== Proposal Number: 04200261 Proposal Title: TESTING SHOCK THEORIES OF X-RAY EMISSION IN THE YOUNG NEARBY O-STAR SIGMA ORIONIS PI: STEPHEN SKINNER Subject Category: NORMAL STARS AND WD Abstract: Current theoretical models attribute the X-ray emission of single O-type stars to strong shocks that form in their line-driven winds. Such models predict cool X-ray emission (kT < 1 keV) and blueshifted asymmetric emission lines. In contrast, HETG observations of some O stars show hot dense plasma and broad symmetric lines. These results have sparked renewed interest in hot star X-ray emission models that involve magnetic wind confinement. We propose to observe the young O9V star Sigma Ori with HETG in order to obtain data on line shapes, centroid shifts, and plasma properties needed to determine if its X-ray emission is produced by instability-driven shocks and to guide the development of new models that incorporate dynamic wind-magnetic field interactions. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:38:44.80 -02:36:00.20 HD37468 ACIS-S HETG 100.00 =================================================================================== Proposal Number: 04200300 Proposal Title: ON THE ORIGIN OF THE X-RAY EMISSION IN LATE B-TYPE STARS PI: NURIA HUELAMO Subject Category: NORMAL STARS AND WD Abstract: We propose for Chandra observations of X-ray emitting late B-type stars. Because they are (theoretically) not expected to emit X-rays, their X-ray detections have been attributed to unresolved late-type, magnetically active stars. The aim of this study is to resolve close binary systems comprised of late B-type stars and visual late-type companions, in order to identify the X-ray emitter. The binary separations are between (1-8)'', i.e. well resolvable by Chandra but not with previous instruments. If we found that X-rays are always emitted by the late-type companions, it can be taken as evidence against intrinsic X-ray emission from late B-type stars. If not, it would indicate that these stars could be intrinsic X-ray emitters and stellar theories may have to be revised. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:06:45.60 -04:39:18.60 HD32964 ACIS-I NONE 2.40 08:38:44.80 -53:05:25.40 HD73952 ACIS-I NONE 7.60 12:39:52.50 -39:59:14.30 HD110073 ACIS-I NONE 2.10 15:13:07.70 -36:05:29.10 HD134837 ACIS-I NONE 3.00 15:13:17.40 -24:00:29.90 HD134946 ACIS-I NONE 2.40 =================================================================================== Proposal Number: 04200331 Proposal Title: AN ULTRADEEP CHANDRA STUDY OF THE ORION NEBULA (GUEST OBSERVER PORTION) PI: ERIC FEIGELSON Subject Category: NORMAL STARS AND WD Abstract: We propose a 850 ks ACIS-I observation of the Orion Nebula spanning 11.5 contiguous days, with GTO Teams providing 150 ks of the time. The Orion Nebula is the best target in the sky for Chandra study of stellar magnetic activity and star formation with extensive multiwavelength support. Science goals include: addressing the mass- and age-dependence of magnetic activity in brown dwarfs; uncovering the low-mass members of the deeply embedded clusters; elucidating the absence of an activity-rotation relation in pre-main sequence stars; measuring flare frequencies, flare plasma conditions and coronal structures in dozens of active stars; investigate the nature of OB wind shocks; and studying X-ray effects on circumstellar environments. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:35:16.70 -05:23:24.00 ORION NEBULA CLUSTER ACIS-I NONE 100.00 05:35:16.70 -05:23:24.00 ORION NEBULA CLUSTER ACIS-I NONE 170.00 05:35:16.70 -05:23:24.00 ORION NEBULA CLUSTER ACIS-I NONE 170.00 05:35:16.70 -05:23:24.00 ORION NEBULA CLUSTER ACIS-I NONE 170.00 05:35:16.70 -05:23:24.00 ORION NEBULA CLUSTER ACIS-I NONE 170.00 =================================================================================== Proposal Number: 04200346 Proposal Title: DISCOVERY OF PARSEC-SCALE OB WIND-SWEPT BUBBLES IN HII REGIONS PI: LEISA TOWNSLEY Subject Category: NORMAL STARS AND WD Abstract: We propose a deep ACIS observation (80 ksec) of the central cavity of the Rosette nebula, as a follow-up of a shorter (20 ksec) GO2 observation which revealed diffuse X-rays pervading the HII region, in addition to hundreds of individual stellar sources. This may be the long-awaited unambiguous detection of wind-blown bubbles in HII regions and, as such, will give critical insights into the astrophysics of OB winds. However, the available Rosette exposure cannot confidently exclude the possibility that the diffuse component there is, at least in part, the integrated contribution of thousands of lower-mass members of the OB association. A longer observation should conclusively resolve this question and lead to insights into the interaction between massive stars and their environment. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 06:31:55.50 +04:56:34.00 ROSETTE NEBULA / NGC ACIS-I NONE 80.00 =================================================================================== Proposal Number: 04200355 Proposal Title: ACIS IMAGING OF Z CMA SUPERJET PI: ALBERTO NORIEGA-CRESPO Subject Category: NORMAL STARS AND WD Abstract: We want to study the X-ray emission of the FU Orionis binary system Z CMa. The Z CMa superjet has a angular extent of approximately 8 arcmin, that at a distance of 1 Kpc corresponds to 2.3pc. The jet is being driven by an embedded protostar reaching velocities of > 600 km/s creating shocks >300$ km/s and capable to produce plasma temperatures of more than 1.e+6 K, i.e. well within the sensitivity threshold of the ACIS detectors. We believe that a longer exposure coupled with stronger shocks will provide a more convincing picture of X-ray emission from these objects. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 07:03:43.10 -11:33:06.20 ZCMA ACIS-S NONE 40.00 =================================================================================== Proposal Number: 04200397 Proposal Title: THE SOLAR-STELLAR CONNECTION IN THE NGC 752 OPEN CLUSTER PI: THEODORE SIMON Subject Category: NORMAL STARS AND WD Abstract: Observations of old open clusters were performed by ROSAT, but with limited sensitivity and spatial resolution. This made it possible to study the evolution of very active binaries in those clusters, but not the coronal properties of their main sequence stars. We are proposing a 140 ks ACIS-I observation of the 2 Gyr old cluster, NGC 752. We wish to compare the coronal activity of its solar-type stars with the Sun and with the 4 Gyr old stars in the M 67 cluster. NGC 752 fills in the large age gap between the Hyades and the Sun, and thus extends the coronal activity-age relation past 1 Gyr for the very first time. We will also study the coronal evolution of post-main sequence stars and cluster binaries, providing a more complete comparison of their X-ray properties up to 4 Gyr. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 01:57:39.00 +37:46:10.00 NGC 752 ACIS-I NONE 140.00 =================================================================================== Proposal Number: 04200415 Proposal Title: CHANDRA HETGS OBSERVATIONS OF EARLY B SUPERGIANTS PI: WAYNE WALDRON Subject Category: NORMAL STARS AND WD Abstract: We are requesting Chandra HETGS observations of 2 early B supergiants, Epsilon Ori (B0Ia, 94 ks) and Kappa Ori (B0.5Ia, 125 ks). Although these stars are relatively X-ray bright, neither has been observed directly since the Einstein era. Our HETGS observations of these stars will extend our understanding of the He-like f/i line ratio dependence on UV flux by providing measurements of this ratio at lower UV flux levels. The diversity in their wind properties as compared to other OB stars will allow us to probe different stellar wind distributed X-ray source models and test the developing concept that the observed X-rays from OB stars are emerging from their associated X- ray "photospheres" (i.e., X-ray depth of unity). Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:36:12.70 -01:12:07.00 EPSILON ORI ACIS-S HETG 94.00 =================================================================================== Proposal Number: 04200417 Proposal Title: DEEP INSIDE THE LAGOON NEBULA PI: MARC GAGNE Subject Category: NORMAL STARS AND WD Abstract: The Lagoon Nebula (M8) is one of the brightest galactic HII regions. While 9 Sgr (O4) and the adjoining OB cluster NGC 6530 have been well studied, the low-mass population has been difficult to identify. Based on the number of optically visible OB stars, we predict that a deep ACIS-I exposure of the Lagoon nebula region will reveal >1500 X-ray sources, most of them classical and weak-line T-Tauri stars. At the heart of this region is the Hourglass Nebula, its exciting O7 star Herschel 36, an ultra-compact HII region, a dense cluster of infrared objects and a ridge of 850um emission cores: signposts of active star formation. By matching infrared sources with X-ray selected Class I, II and III YSOs, we will signficantly increase our census of low-mass stars in galactic HII regions. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 18:03:45.10 -24:22:05.00 M8 ACIS-I NONE 15.00 18:03:45.10 -24:22:05.00 M8 ACIS-I NONE 165.00 =================================================================================== Proposal Number: 04200436 Proposal Title: HIGH-RESOLUTION SPECTROSCOPY OF THE CLASSICAL T TAURI STAR SU AUR PI: KESTER SMITH Subject Category: NORMAL STARS AND WD Abstract: We propose to obtain high-resolution HETG spectra of the Classical T Tauri star SU Aur. Classical T Tauri stars are unique amongst magnetically active late-type stars, in that they are accreting material from a circumstellar disc. Their magnetospheres therefore contain higher density plasma than a normal M-dwarf or RS CVn. Complex kinematic behaviour is expected from the infalling plasma. Furthermore, the interaction between stellar magnetic field and inner disc may drive reconnection in the magnetosphere. All these processes can be probed in unprecedented detail by Chandra. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 04:55:59.40 +30:34:01.50 SU AUR ACIS-S HETG 101.98 =================================================================================== Proposal Number: 04200452 Proposal Title: PROBING WEAK-LINED T TAURI STARS WITH CHANDRA PI: STEVEN KAHN Subject Category: NORMAL STARS AND WD Abstract: We propose to investigate with Chandra ACIS-S/HETG the thermal plasma properties of two X-ray bright weak-lined T Tauri stars, V773 Tau and HDE 283572. They represent extreme cases of magnetic activity with rapid rotation, their X-ray emission is dominated by hot plasma, and they display large flares. V773 Tau probes the PMS stage of low-mass stars, while HDE 283572 probes the PMS stage of massive A-type stars. Radio coverage will be requested to monitor the non-thermal emission. The study in both wavelength regimes will give crucial information on the energetic processes in young stars with magnetically active coronae and will provide a link between main-sequence stars and YSOs with accretion disks. Spectra of nearby X-ray bright Class I to III objects will be obtained for free as well. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 04:21:58.80 +28:18:06.40 V987 TAU = HDE 28357 ACIS-S HETG 100.00 =================================================================================== Proposal Number: 04200573 Proposal Title: MAPPING MAGNETIC LOOPS IN THE CORONA OF 44I BOO PI: NANCY BRICKHOUSE Subject Category: NORMAL STARS AND WD Abstract: We propose an LETG/HRC-S observation of the bright, eclipsing contact binary 44i Boo to map coronal structures at different temperatures. This 120 ks observation will complement the 60 ks archival HETG oservation, which shows rotationally broadened line profiles and line centroid shifts as a function of orbital phase. This emission appears to be related to polar starspots found in optical Doppler images of rapid rotators. Given the short period of 44i Boo (6.4 hr), and the high spectral resolution at long wavelengths of LETG, the emission lines from a localized active region will exhibit observable line profile changes. The LETG/HRC-S spectra will provide line shift measurements, light curves, and diagnostics for temperature, density, and elemental abundances. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 15:03:47.30 +47:39:14.60 44I BOO HRC-S LETG 120.00 =================================================================================== Proposal Number: 04200675 Proposal Title: X-RAY EMISSION FROM MASSIVE PROTO-STARS PI: PETER HOFNER Subject Category: NORMAL STARS AND WD Abstract: The formation of massive stars remains a challenge to contemporary astrophysics. Due to the high extinction in the molecular cloud core where massive stars form direct observation of the massive proto-stars is only possible at high X-ray energies. We propose ACIS-I observations of 2 new massive proto-stars which are still in an active accretion phase. The proposed observations will allow us to determine for the first time the precise position of the massive protostars with respect to the surrounding molecular and ionized gas. The measured luminosity will give first constraints on the physical mechanism responsible for the X-ray emission and we expect to perform spectroscopy to derive physical parameters of the matter in the interface between proto-stellar surface and the accretion disk. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 20:14:29.06 +41:13:32.50 IRAS 20126+4104 ACIS-I NONE 40.00 =================================================================================== Proposal Number: 04200796 Proposal Title: X RAYS FROM A HIGHLY ACTIVE, VERY YOUNG BROWN DWARF PI: JOHN GIZIS Subject Category: NORMAL STARS AND WD Abstract: USing 2MASS data and CTIO photometry, an isolated, 25 Jupiter mass brown dwarf has been discovered in the TW Hya association. This M8 brown dwarf shows extremely strong H alpha emission, indicating it is the second member of a rare class of highly active, young brown dwarfs. Chandra observations are needed to understand the nature of activity. The proposed observations will obtain an X-ray spectrum of the brown dwarf, or else set a surprisingly deep upper limit on any X-ray activity. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:07:33.40 -39:32:54.00 2MASSW J1207334-3932 ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04200847 Proposal Title: FINE X-RAY TOMOGRAPHY OF PLANETARY NEBULA PI: JUN'ICHI KOTOKU Subject Category: NORMAL STARS AND WD Abstract: Although PNs have been thus made a stimulating new addition to the X-ray source populations, the X-ray emission mechanisms and the association between X-ray emitting regions and characteristic features observed in other wavelengths have not yet been clarified, and samples of X-ray PNs are still quite limited. To establish the nature of X-ray emitting PNs, observations with a finer spatial resolution are obviously inevitable. Here, to apply brand-new, X-ray-morphology diagnostic for another PNs with finer spatial resolution, and to verify the role of stellar wind which has been critical in the de facto standard model of the X-ray emission mechanism in PNs, we propose to observe the most promising candidate, NGC 4361 with Chandra ACIS-S. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:24:31.00 -18:47:09.20 NGC 4361 ACIS-S NONE 30.00 =================================================================================== Proposal Number: 04200848 Proposal Title: CONSTRAINING THE T TAURI STAR X-RAY EMISSION MECHANISM: HIGH-RESOLUTION SPECTROSCOPY OF THE YOUNG STAR DOAR 21 PI: ERIC JENSEN Subject Category: NORMAL STARS AND WD Abstract: Though most low-mass pre-main-sequence stars (T Tauri stars) emit x-rays, the x-ray emission mechanism is not well constrained by existing observations. We propose high-spectral resolution HETGS/ACIS observations of the weak-line T Tauri star DoAr 21. Through temperature- and density-sensitive line ratios, and measurements of line widths, the proposed observation will provide details on the physical condition in the x-ray emitting region, helping to distinguish between models of x-ray emission from solar-type magnetic activity and models of star-disk interactions. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 16:26:03.20 -24:23:40.00 DOAR 21 ACIS-S HETG 100.00 =================================================================================== Proposal Number: 04200865 Proposal Title: PROBING THE CORONA OF AN ACTIVE SOLAR-TYPE STAR PI: GAITEE HUSSAIN Subject Category: NORMAL STARS AND WD Abstract: Observations of active cool stars indicate that flux emerges at high latitudes. We will use LETG spectra of AB Dor (K0V) to look for rotational modulation in line profiles and thus to evaluate the locations of emitting regions. Time-constrained observations are requested in order to obtain contemporaneous surface magnetic field maps. These maps will be extrapolated to produce a 3-D coronal field model for the star. The 3-D model can be used to synthesise Doppler-shifted line profiles as the star rotates in a physically realistic way that includes self-eclipse effects. This will enable us to probe the relationship between X-ray emitting structures in the corona and magnetic structures that can be mapped in detail at the photosphere. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:28:44.50 -65:27:02.20 AB DORADUS HRC-S LETG 88.26 =================================================================================== Proposal Number: 04200952 Proposal Title: HOT GAS IN THE CIRCUMSTELLAR BUBBLE NGC 6888 PI: ROBERT GRUENDL Subject Category: NORMAL STARS AND WD Abstract: Fast stellar winds from massive stars can blow bubbles in the ambient medium. Bubble interiors should be filled with shocked fast wind at X-ray-emitting temperatures. Diffuse X-rays have been unambiguously detected in NGC6888 and S308, two circumstellar bubbles around Wolf-Rayet stars. Both show X-ray luminosities 1--2 orders of magnitude lower than expected in adiabatic bubble models. To explain this discrepancy, a mass-loading bubble model has been proposed and appears to be able to explain the temperature and surface brightness profiles of S308 as derived from XMM data. We request a deep Chandra ACIS-S observation of the X-ray-bright northeast part of NGC6888 in order to assess the applicability of mass-loading bubble models and to quantify the physical process of cloud evaporation. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 20:12:35.00 +38:26:30.00 NGC 6888 ACIS-S NONE 100.00 =================================================================================== Proposal Number: 04200970 Proposal Title: MU LEP: A CASE STUDY FOR THE ORIGIN OF X-RAYS FROM CHEMICALLY PECULIAR LATE B STARS PI: EHUD BEHAR Subject Category: NORMAL STARS AND WD Abstract: Bright X-ray emission from isolated late B stars remains unexplained, as conventional theory predicts these stars neither to have coronae nor to eject sufficiently intense stellar winds. Among those that have been detected, several of the brightest are chemically peculiar stars. We propose to observe Mu Lep, the X-ray brightest HgMn star and to use a variety of spectroscopic techniques as well as the high angular resolution of Chandra to unveil the source of its X-ray emission, whether shocks in stellar winds, magnetically active regions, or an invisible companion. The X-ray-measured abundance patterns will be compared with those in the photosphere. X-ray emission from peculiar elements, which could provide a definite association of the X-rays with the B star, will be sought. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:12:55.90 -16:12:19.70 MU LEP (HR 1702, HD HRC-S LETG 100.00 =================================================================================== Proposal Number: 04200729 Proposal Title: INVESTIGATING COLLIDING WINDS AND MAGNETISED STARS IN PRE-PLANETARY NEBULAE PI: RAGHVENDRA SAHAI Subject Category: NORMAL STARS AND WD Abstract: Preplanetary nebulae (PPNs) - the progenitors of planetary nebulae (PNs) - hold the key to our understanding of the very late stages of stellar evolution. Recent HST studies show that the fast wind-slow wind interaction process believed to produce diffuse X-ray emission from PNs, must already be active in PPNs. Sensitive observations for X-ray emission in PPNs, however, do not exist. We propose ACIS-S observations of 4 well-studied PPNs with very fast outflows in order to directly probe (a) the very hot (10$^{7-8}$K) shocked gas which must result from the interaction, and (b) the presence of strong stellar magnetic fields which may be responsible for collimating the fast outflows. These data will be invaluable in testing theoretical models of X-ray emission in PPNs and PNs. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 07:42:16.80 -14:42:52.00 OH231.8+4.2 ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04200138 Proposal Title: HETGS SPECTROSCOPY OF A CORONALLY ACTIVE CONTACT BINARY, VW CEP PI: DAVID HUENEMOERDER Subject Category: NORMAL STARS AND WD Abstract: Short-period binaries represent the extreme in rotational-dynamo generated coronae. These stars are important for probing the origin and nature of coronae in the regimes of rapid rotation and activity saturation. A relatively bright, partially eclipsing, and very active object is VW Cep (P=0.28d). We will derive emission measure distributions and abundances from diagnostics currently available only in HETGS spectra. We will also examine spatial distributions through flux modulation and Doppler shifts. Two hypotheses exist for loop sizes; HETGS spectra will distinguish between these with density and volume estimates. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 20:37:21.50 +75:36:01.50 VW CEP ACIS-S HETG 120.00 *********************************************************************************** WD BINARIES AND CV -------------------------------------------------- =================================================================================== Proposal Number: 04300030 Proposal Title: NEAR-EDDINGTON ACCRETION IN THE BINARY SUPERSOFT X-RAY SOURCE RX J0513.3-6951 PI: PETER PREDEHL Subject Category: WD BINARIES AND CV Abstract: Study of the X-ray properties of the binary supersoft X-ray source RX J0513.3-6951. Search for absorption edges expected in heated atmospheres of white dwarfs. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:13:50.80 -69:51:47.00 RXJ0513.9-6951 HRC-S LETG 48.00 =================================================================================== Proposal Number: 04300201 Proposal Title: THE STRUCTURE OF THE BOUNDARY LAYER OF U GEMINORUM IN OUTBURST PI: CHRISTOPHER MAUCHE Subject Category: WD BINARIES AND CV Abstract: U Geminorum in outburst is an ideal laboratory in which to study the response of the boundary layer of nonmagnetic CVs to the ~3 order-of-magnitude increase in the mass-accretion rate of dwarf novae in outburst. Despite extensive observations in quiescence, U Gem has only infrequently been observed in the X-ray band in outburst, and never with "modern" (CCD, grating) instruments. We propose to remedy this situation by obtaining a TOO Chandra HETG spectroscopic observation of U Gem in outburst to determine the emission measure distribution, the velocity widths of the lines, the plasma density, the wavelength dependence of the dips in the light curves and the quasiperiodic oscillations, thereby providing constraints of the thermal, physical, and temporal structure of its boundary layer. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 07:55:05.30 +22:00:05.70 U GEM ACIS-S HETG 67.00 =================================================================================== Proposal Number: 04300237 Proposal Title: THE ANISOTROPIC TRANSFER OF RESONANCE PHOTONS IN CATACLYSMIC VARIABLES PI: YUKIKATSU TERADA Subject Category: WD BINARIES AND CV Abstract: The purpose of the present proposal is to establish a new idea of an anisotropic transfer of resonance photons in the accretion column of polars, which we have developed with Monte Carlo simulations and ASCA observations (Terada et al. 1999, 2001; Terada 2002). Our goal is to demonstrate the rotational modulation of equivalent width of resonance lines from light elements, such as S, Si, Al, Mg, Ne, and Na, via Chandra HETG observation of a polar V834 Centauri, and to confirm our scenario by comparing the observed anisotropy with expectations by our Monte Carlo calculations. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 14:09:07.50 -45:17:17.10 V834 CENTAURI ACIS-S HETG 60.00 =================================================================================== Proposal Number: 04300295 Proposal Title: THE HIGH RESOLUTION X-RAY SPECTRUM OF AM HERCULIS: PROBING THE ACCRETION PROCESS PI: KOJI MUKAI Subject Category: WD BINARIES AND CV Abstract: We propose a 100ks Chandra HETG observation of the polar AM Herculis in a high state. With the good quality, high energy resolution data this will provide, we will be able to use the HEG to: (i) examine the nature of the 6.4 keV fluorescence line in order to see if it has its origin in reflection from the white dwarf surface or absorption in the pre-shock flow. (ii) Measure the widths of the thermal Fe Kalpha lines in order to constrain the importance of Compton broadening in this star. Also, using the MEG we will be able to (iii) measure the line strengths of the lighter elements and examine the physical conditions in the post-shock region. [NOTE: This is a resubmission of an accepted Cycle 3 TOO proposal, which has not been triggered as of March 14, 2002.] Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 18:16:13.30 +49:52:04.20 AM HERCULIS ACIS-S HETG 100.00 =================================================================================== Proposal Number: 04300437 Proposal Title: TIMING THE ORBIT OF RX J1914.4+2456: GRAVITATIONAL RADIATION AND THE NATURE OF THE X-RAY EMISSION PI: TOD STROHMAYER Subject Category: WD BINARIES AND CV Abstract: We propose observations of RX J1914.4+2456, a candidate double-degenerate binary with one of the shortest orbital periods known. We have recently found evidence for gravitational radiation induced decay of its orbit from precise timing of archival ROSAT observations. Direct study of the orbital evolution has important implications for the nature of the X-ray flux from this and related systems. We propose to confirm our preliminary ROSAT orbit ephemeris and enable long term timing of the orbit to probe the physics of gravitational radiation and its effect on binary evolution. We will also search for a possibly hidden orbital period longward of the observed 569 s period. Such future timing would enable new gravity wave science with NASA's LISA mission. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 19:14:26.10 +24:56:43.60 RX J1914.4+2456 ACIS-S NONE 10.00 19:14:26.10 +24:56:43.60 RX J1914.4+2456 ACIS-S NONE 15.00 19:14:26.10 +24:56:43.60 RX J1914.4+2456 ACIS-S NONE 35.00 =================================================================================== Proposal Number: 04300505 Proposal Title: IN SEARCH OF THE X-RAY COUNTERPART TO KUV 01584-0939 (CET3) PI: TOD STROHMAYER Subject Category: WD BINARIES AND CV Abstract: We propose an exploratory Chandra observation of KUV 01584-0939 (Cet3), a candidate double-degenerate binary with a 10 minute period discovered in the optical. We have tentatively identified an X-ray counterpart in the ROSAT faint source catalog (1RXS J020052.9-092435). Our observations will definitively confirm or reject this identification. The system appears very similar to several candidate double-degenerate (AM CVn) binaries which show strong modulations in the X-ray (for example, RX J1914+24 and RX J0806+15). If the candidate ROSAT source is related to Cet3, then it will very likely be pulsed at or near the 10 min. optical period (which may be a superhump period). We will search for the X-ray period and if found begin a timing campaign to monitor the orbital evolution. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 02:00:52.90 -09:24:35.50 1RXS J020052.9-09243 ACIS-S NONE 20.00 =================================================================================== Proposal Number: 04300626 Proposal Title: PROBING THE BOUNDARY LAYER AND WIND OF U GEM IN OUTBURST PI: KNOX LONG Subject Category: WD BINARIES AND CV Abstract: EUVE observations have identified the dwarf nova U Geminorum as the first (and so far only) example of a disk-accreting white dwarf system with a "classical" boundary layer. As such, it provides a unique opportunity for exploring the physics of the accretion disk-central object interaction. We propose to exploit this opportunity with a 50 ksec HRC-S/LETG observation of U Gem in outburst in order to obtain high quality, phase resolved spectra. The observations will allow us to accurately characterize the optically-thick boundary layer emission and to probe the structure and kinematics of the extended material, whether wind or accretion stream, surrounding the boundary layer and disk, and will lead to solid understanding of the nature of the disk-white dwarf interaction. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 07:55:05.30 +22:00:06.00 U GEM HRC-S LETG 50.00 =================================================================================== Proposal Number: 04300647 Proposal Title: MULTIWAVELNGTH TARGET OF OPPORTUNITY OBSERVATIONS OF A BRIGHT NOVA IN OUTBURST PI: SUMNER STARRFIELD Subject Category: WD BINARIES AND CV Abstract: We propose to obtain spectrophotometry with CHANDRA, plus ground based optical and IR spectra of one bright nova in outburst. Our X-ray studies have shown that X-rays are the best tool for studying the hot phase of the outburst. In Cycle 1 we obtained spectra of V382 Vel and V1494 Aql. V382 Vel showed only an emission line spectrum in our data while V1494 Aql evolved from an emission line spectrum to that of a Super Soft Source (SSS). Observations of these phases provided an opportunity to study the composition of the underlying white dwarf, the lifetime of the TNR phase of the outburst, and the energy budget of the explosion. More data on new novae is needed because the behavior of these two novae was very different, which is expected from theory. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 19:01:09.38 -22:00:05.90 V4743 Sgr HRC-S LETG 25.00 19:01:09.38 -22:00:05.90 V4743 Sgr HRC-S LETG 25.00 19:01:09.38 -22:00:05.90 V4743 Sgr ACIS-S NONE 5.00 =================================================================================== Proposal Number: 04300708 Proposal Title: A UNIFORM STUDY OF GLOBULAR CLUSTER X-RAY SOURCES: THE KEY TO CLUSTER DYNAMICAL EVOLUTION PI: WALTER LEWIN Subject Category: WD BINARIES AND CV Abstract: We propose to extend our ongoing studies of the dynamical evolution of globular clusters by observing their populations of low-luminosity X-ray sources. Many of these sources are binary systems (or have evolved from them) and hold the key to the cluster's dynamical evolution. We propose observations of a variety of clusters with widely different physical properties such as central concentration, cluster size and mass, which are all key ingredients in the formation and evolution of binaries. To make this study as uniform as possible, the clusters will be observed to the same limiting luminosity. Numerical simulations with the world's fastest computer will assist in the interpretation of our observational data. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 00:52:45.30 -26:34:43.00 NGC 288 ACIS-S NONE 55.00 17:17:07.30 +43:08:11.50 NGC 6341 ACIS-S NONE 52.00 18:08:02.20 -43:42:19.70 NGC 6541 ACIS-S NONE 46.00 =================================================================================== Proposal Number: 04300925 Proposal Title: X-RAYING BAADE'S WINDOW THROUGH THE GALACTIC BULGE PI: JONATHAN GRINDLAY Subject Category: WD BINARIES AND CV Abstract: We propose to conduct the first of a two-part deep galactic plane survey on one ACIS-I field in Baade's Window, a region of low obscuration near the galactic center. The survey will reach a sensitivity limit of Lx ~ 3 x 10^30 erg/s for sources in the galactic bulge, and thus provide the first census of accretion powered binaries (cataclysmic variables and quiescent low mass x-ray binaries) as well as millisecond pulsars to constrain the stellar and binary evolution of the bulge vs. the populations in globular clusters and the disk. Optical identifications will be made with a coordinated mosaic survey with ACS on HST (B/R/Halpha), to achieve a sensitivity for CVs down to their luminosity function peak at Mv ~9. A later, followup survey would complete the coverage of Baades Window. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 18:03:21.70 -29:58:27.00 BAADE'S WINDOW FIELD ACIS-I NONE 100.00 =================================================================================== Proposal Number: 04300907 Proposal Title: A X-RAY WINDOW TO V838 MON, A BRIGHT SYMBIOTIC NOVA PI: MARINA ORIO Subject Category: WD BINARIES AND CV Abstract: We propose to observe V838 Mon, a bright symbiotic star which underwent a nova like outburst in January of 2002. Symbiotic novae are X-ray sources and the properties of their X-ray emission indicate how the mass ejection occurs, and whether the hot white dwarf remnant grows in mass towards the Chandrasekhar mass and a type Ia SN outburst. Symbiotic nova outburst are observed only every few years. The last bright outburst of this type was observed in 1944, so this is an opportunity that should not be missed. Following a short ACIS-S observation, we propose two grating observations if the source is sufficiently bright. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 07:04:04.80 -03:50:51.10 V838 MON HRC-S LETG 50.00 07:04:04.80 -03:50:51.10 V838 MON ACIS-S NONE 7.00 07:04:04.80 -03:50:51.10 V838 MON ACIS-S HETG 25.00 *********************************************************************************** BH AND NS BINARIES -------------------------------------------------- =================================================================================== Proposal Number: 04400009 Proposal Title: REOLVING THE SHORT GAMMA-RAY BURST MYSTERY PI: KEVIN HURLEY Subject Category: BH AND NS BINARIES Abstract: Gamma-ray bursts may be divided into two categories: short-duration and long-duration. No X-ray follow-up observation has ever been made for a short GRB, and despite searches, no optical or radio counterpart has ever been found for one either. We propose to observe the error boxes of two short bursts detected by the Interplanetary Network with ACIS-I. The detection of a fading X-ray counterpart will establish a ~1" position for the burst, which can then be searched much deeper in the optical and radio ranges for a fading counterpart and a host galaxy. These observations will help determine whether the origin of the short bursts is different from those of the long ones (e.g. merging neutron stars vs. hypernovae). Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 08:07:46.10 +21:14:17.90 GRB021201 ACIS-I NONE 20.00 08:07:46.10 +21:14:17.90 GRB021201 ACIS-I NONE 20.00 =================================================================================== Proposal Number: 04400027 Proposal Title: VARIABILITY IN THE LINE EMISSION OF THE X-RAY PULSAR 4U 1626-67 PI: CLAUDE CANIZARES Subject Category: BH AND NS BINARIES Abstract: 4U1626-67 is an ultracompact system which consists of a disk-accreting magnetic neutron star and a very low mass, hydrogen-depleted companion in a 42-min binary. During AO1 we resolved the Ne/O emission line complex into Doppler pairs of broadened (~2500 km/s FWHM) lines from highly ionized Ne and O. We argue that the lines appear to originate in the outer accretion disk. Photoelectric edges of Ne and O appear stronger than expected from interstellar material. Recent XMM observations also suggested variability in the line morphology. We propose to reobserve 4U1626-67 for 100 ks in order to determine variations from the previously observed line shapes, changes in temperatures and densities, and their dependence on pulse and binary phase. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 16:32:16.70 -67:27:42.00 4U 1626-67 ACIS-S HETG 100.00 =================================================================================== Proposal Number: 04400046 Proposal Title: HIGH RESOLUTION SPECTROSCOPY OF THE LMXB SCO X-1 PI: CLAUDE CANIZARES Subject Category: BH AND NS BINARIES Abstract: Sco X-1 is by far the brightest persistent extrasolar X-ray source in the sky. Early observations showed a bright X-ray continuum and strong K (Fe XXV) line emission. The source has been well established as an LMXB Z-source spending most of its time on the so-called flaring branch. Low energy line emission has been detected in the EINSTEIN OGS, which most likely arises from a photoionized ADC. Through its variable radio emission it was established as a Galactic-jet radio source with strong similarities to luminous radio galaxies and quasars and we expect to observe P Cygni lines from a strong disk wind as observed in Cir X-1. We developed a specific observation strategy that allows to safely observe the source with the Chandra HETGS. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 16:19:55.10 -15:38:25.00 SCO X-1 ACIS-S HETG 15.00 =================================================================================== Proposal Number: 04400140 Proposal Title: MONITORING THE SPECTRAL VARIABILITY OF THE ULTRALUMINOUS X-RAY SOURCE IN HOLMBERG IX PI: PATRICK SLANE Subject Category: BH AND NS BINARIES Abstract: 1E0953.8+6918 is an ultraluminous X-ray source (ULX) residing in HoIX, a dwarf irregular companion to M81. It is surrounded by an emission nebula which appears to be shock heated. Recent observations indicate an association between ULXs and starburst activity, but HoIX is a gas-poor galaxy, leaving such an interpretation in doubt at least for this source. From our recent studies, we have established that 1E0953.8+6918 is a point source for which we have identified a 21st magnitude optical counterpart. Observations to date show that, like other ULXs, 1E0953.8+6918 shows considerable flux variability on timescales of weeks to months. Here we propose to study the spectral variations with flux in order to better assess the nature of this ULX, and its relation to the surrounding nebula. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 09:57:53.00 +69:03:51.00 1E0953.8+6918 ACIS-S NONE 15.00 09:57:53.00 +69:03:51.00 1E0953.8+6918 ACIS-S NONE 15.00 09:57:53.00 +69:03:51.00 1E0953.8+6918 ACIS-S NONE 15.00 =================================================================================== Proposal Number: 04400240 Proposal Title: FIRST X-RAY DETECTION OF AN ISOLATED BLACKHOLE CANDIDATE MACHO-96-BLG-5 PI: YOSHIHITO KOBAYASHI Subject Category: BH AND NS BINARIES Abstract: All previously known stellar blackholes have been found as close binaries. The MACHO team recently reported two microlensing events with exceptionally long duration, lasting several hundred days, suggesting that the lensing objects are isolated black holes with $\sim$6~$M_{\odot}$ each. We thus propose a 10~ksec observation of the MACHO-96-BLG-5 lens in X-ray wavelength. By using the superior spacial resolution of Chandra, we search the X-ray counterpart of the lens. By testing the hardness ratio, we can test whether MACHO-96-BLG-5 is undoubtly due to a microlensing by an isolated blackhole or not. This observation may thus reveal that a Chandra observation of the long duration MACHO events is aunique and powerful tool to address isolated blackhole searches. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 18:05:02.50 -27:42:17.00 MACHO-96-BLG-5 ACIS-S NONE 10.00 =================================================================================== Proposal Number: 04400255 Proposal Title: THE X-RAY JETS OF SS 433 PI: ROBERT FENDER Subject Category: BH AND NS BINARIES Abstract: In the past three years Chandra observations of X-ray jets from AGN have advanced considerably our understanding of jet physics on large scales. SS 433 is the most famous X-ray binary jet system, and the prototypical `microquasar'. Powerful quasi-continuous jets are observed from milliarsec- to arsec-scales, and again on degree scales where they deform the surrounding W50 nebula. In a previous 10 ksec ACIS-S observation we have found unexpected arcsec-scale X-ray jets, for which have been able to extract spatially-resolved X-ray spectra revealing a hot continuum and Fe XXV emission lines, contrary to all models for the evolution of the jet. Based on these observations and predictions of X-ray line profiles, we request a further, deeper observation of SS 433 with ACIS-S. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 19:11:49.60 +04:58:58.00 SS 433 ACIS-S NONE 60.00 =================================================================================== Proposal Number: 04400275 Proposal Title: LOCATING THE COUNTERPARTS OF THE INTRIGUING X-RAY BURSTERS X1702-429 AND X1715-321 PI: STEFANIE WACHTER Subject Category: BH AND NS BINARIES Abstract: We propose to obtain accurate localizations of two intriguing X-ray bursters with the Chandra HRC-I in an effort to establish their optical/IR counterparts. X-ray observations alone can only provide a limited picture of these sources and many basic characteristics of the binary system have to be established via optical/IR observations. This project can be achieved with a minimal amount of observing time (1 ksec for each source) and the results can be immediately applied to already existing optical/IR data. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 17:06:16.80 -43:02:31.50 X1702-429 HRC-I NONE 1.00 17:18:47.30 -32:10:40.20 X1715-321 HRC-I NONE 1.00 =================================================================================== Proposal Number: 04400302 Proposal Title: LOCALIZING THE TRANSIENT 89 SECOND PULSAR XTE J1906+09 PI: RICHARD ROTHSCHILD Subject Category: BH AND NS BINARIES Abstract: We propose a 15 ks ACIS-I observation to yield an arcsecond position for the transient 89-s pulsar XTE J1906+09. RXTE scans located the source within 2', and indicated a possible ~28 day sinusoidal variation in the pulse arrival times. Recurrent transient pulsars are almost always found in high mass Be-binary systems, but a search in Simbad reveals no O or B stars within 10'. To add to the mystery, Corbet's P{spin}/P{orbit} correlation for recurrent transient pulsars would predict a ~100 day orbital period, not 28 days or 2 years (the recurrence time). The Chandra precision position will allow for identification of the counterpart, and we will follow-up with infrared observations to determine the characteristics of the binary system. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 19:05:20.00 +09:02:30.00 XTE J1906+09 ACIS-I NONE 15.00 =================================================================================== Proposal Number: 04400381 Proposal Title: X-RAY QUIESCENT COUNTERPARTS OF THE GLOBULAR CLUSTER TRANSIENTS PI: RUDY WIJNANDS Subject Category: BH AND NS BINARIES Abstract: We propose to study the quiescent X-ray counterparts of bright neutron star X-ray transients in several Galactic globular clusters. The relatively well-known distances to those clusters make them excellent targets to study the properties of their quiescent neutron star systems. Previous Chandra observations of the clusters caught the transient systems in outburst, providing sub-arcsecond positions for those transients and allowing immediate X-ray identification of their quiescence counterparts. We will also obtain excellent data on the low-luminosity X-ray source population of the target globular clusters which we will use in our ongoing efforts to determine the nature of these sources. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 17:48:05.20 -24:46:49.00 TERZAN 5 ACIS-S NONE 40.00 17:48:52.20 -20:21:32.00 NGC 6440 ACIS-S NONE 25.00 =================================================================================== Proposal Number: 04400390 Proposal Title: LOCALIZING THE NEUTRON STAR X-RAY TRANSIENT EXO 1747-214 PI: JOHN TOMSICK Subject Category: BH AND NS BINARIES Abstract: We propose to use Chandra to localize the neutron star X-ray transient EXO 1747-214 in quiescence to facilitate its identification in a deep IR image we have obtained. We plan to perform follow-up IR and optical observations to determine the source distance, the binary orbital parameters and the neutron star mass. Low column density, which is important for soft X-ray and optical observations, was a main consideration in source selection. We derive an upper limit of 8 kpc on the source distance from the X-ray burst flux observed by EXOSAT. A Chandra detection is likely since a non-detection will provide a luminosity upper limit of 6E31 erg/s, which would be unusually low for a neutron star system. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 17:50:25.30 -21:25:21.70 EXO 1747-214 ACIS-S NONE 25.00 =================================================================================== Proposal Number: 04400392 Proposal Title: DIAGNOSING THE ACCRETION FLOW GEOMETRY OF A GALACTIC BLACK HOLE IN OUTBURST WITH CHANDRA PI: WALTER LEWIN Subject Category: BH AND NS BINARIES Abstract: We propose to study the accretion flow geometry of a Galactic black hole in outburst using the Chandra HETGS. Models for the accretion flow geometry in Galactic black holes make different predictions which can be tested with high resolution spectroscopy. We will build on the recent successes of this program -- including the detection of broad Fe K lines likely shaped by Doppler shifts and strong gravity, and narrow absorption lines in an outflowing disk atmosphere -- by obtaining spectra with improved sensitivity. We request a total of 200 ksec (4 obs. of 50 ksec; 1 ``fast'' TOO and 3 follow-ups) for this Chandra study. We will support these observations with simultaneous RXTE and Integral observations, and with radio and optical observations from approved programs around the globe. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- TOO ACIS-S HETG 50.00 TOO ACIS-S HETG 50.00 TOO ACIS-S HETG 50.00 TOO ACIS-S HETG 50.00 =================================================================================== Proposal Number: 04400494 Proposal Title: PROBING THE ACCRETION GEOMETRY OF A QUIESCENT BLACK HOLE PI: ROBERT HYNES Subject Category: BH AND NS BINARIES Abstract: Advective accretion is invoked to explain low luminosity accretion onto both stellar mass and supermassive black holes. There has been much theoretical activity, and controversy, but observational constraints are weak. We have found considerable X-ray and optical variability. The similarity of timescales and amplitudes, and the emission line kinematics all suggest that the optical variability is driven by X-ray illumination of the accretion disc. We now propose the first simultaneous X-ray and optical observations to test if the variations are correlated and measure relative amplitudes. Our program will yield new constraints upon the models, as the strength of the optical emission line response is sensitive to the unobservable EUV spectrum, and to the X-ray emission geometry. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 20:24:03.80 +33:52:02.10 V404 CYG ACIS-S NONE 60.00 =================================================================================== Proposal Number: 04400516 Proposal Title: THE FAINTEST 'FIELD' LOW-MASS X-RAY BINARIES PI: MICHIEL VAN DER KLIS Subject Category: BH AND NS BINARIES Abstract: We propose to continue our survey, begun in Cycle 1, of the group of persistently faint galactic X-ray sources outside globular clusters which are thought to be LMXBs, but about which very little was known before Chandra. Our exploratory Cycle 1 work confirmed the low Lx of these objects, and produced some intriguing new results which we will follow up with observations approved in Cycle 3. Given theoretical as well as empirical arguments for the detection of spectral lines, in Cycle 4 we propose follow-up ACIS-S CC observations for 2 sources, and 1 deep imaging observation. Our aim is to extend knowledge about compact-object accretion physics towards lower accretion levels than previously accessible and to provide a sample against which to compare the faint globular-cluster LMXBs. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 17:38:17.10 -26:59:38.60 1735-269 ACIS-S NONE 40.00 =================================================================================== Proposal Number: 04400555 Proposal Title: FINDING BLACK HOLES AND UNDERSTANDING STAR CLUSTER EVOLUTION WITH CHANDRA PI: SIMON PORTEGIES ZWART Subject Category: BH AND NS BINARIES Abstract: The Large Magellanic Cloud contains an interesting population of star clusters with a range in ages (~< 100 Myr), richnesses (10^4 to 10^5 stars), and densities (up to 10^4 star/pc^3) unlike any clusters in the Milky Way. Recent theoretical models predict these clusters to be unusually rich in black-hole X-ray binaries (BHXBs); they are at an age when BHs have formed but have not yet been expelled. We propose to observe six such clusters (in 4 pointings of 30 ks each) to a detection threshold of 1.5 times 10^32 erg/s (a sensitivity about 1000 times better than current limits). The wide parameter ranges of the selected clusters will allow us to put important constraints on dynamical models of star clusters and on the theoretical predictions concerning the formation and evolution of BHXBs. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:08:44.00 -68:45:36.00 NGC 1850 A/B ACIS-S NONE 30.00 =================================================================================== Proposal Number: 04400554 Proposal Title: A CHANDRA SNAPSHOT OBSERVATION OF AX J1226.8--6249: A HIGH MASS X-RAY BINARY PRODUCING A BOW-SHOCK NEBULA ? PI: STEPHEN EIKENBERRY Subject Category: BH AND NS BINARIES Abstract: We propose a 3-kilosecond ACIS-S observation toward the unidentified X-ray source AX J1226.8-6249. This object is located close to a newly discovered mid-infrared bow-shock nebula, and we find that it is highly probable that AX J1226.8-6249 is in fact a Be/X-ray runaway binary, producing a bow shock via its supersonic motion. Our proposed ACIS-S observation will enable us to estimate the position of the source with arcsecond accuracy, which will be crucial to understanding the nature of the source by determining the validity of the Be/X-ray binary hypothesis and the origin of the bow shock. If confirmed, AX J1226.8-6249 will be the first Be/X-ray binary observed with a bow shock, and only the second bow shock system (after Vela X-1) from all high-mass X-ray binaries. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:26:52.80 -62:49:07.00 AX J1226.8-6249 ACIS-S NONE 3.00 =================================================================================== Proposal Number: 04400563 Proposal Title: UNDERSTANDING THE EXTENDED EMISSION IN CYGNUS X-3 PI: WILLIAM HEINDL Subject Category: BH AND NS BINARIES Abstract: We propose to observe the microquasar Cyg X-3 during a low X-ray state in order to study extended, jet-like emission which we have discovered in archival ACIS-S/HETG observations. Cyg X-3 is a binary system with a neutron star or black hole primary and a Wolf-Rayet companion. By using the ACIS-S without gratings, we will obtain a CCD spectrum of the extension. In order to understand the nature of the extension, we will measure the continuum shape and search for reflected emission lines from the intense Wolf-Rayet stellar wind. A second observation with the HRC-I will provide the highest angular resolution possible with Chandra, allowing us to study the extension close to the compact object (where the ACIS image will be severely piled up) where matter may be ejected from the system. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 20:32:25.50 +40:57:27.70 CYG X-3 HRC-I NONE 15.00 =================================================================================== Proposal Number: 04400587 Proposal Title: PURSUING HINTS OF MULTIPLICITY IN M31 GLOBULAR CLUSTER BO 375 PI: ALBERT KONG Subject Category: BH AND NS BINARIES Abstract: Bo 375 in M31 contains one of the most luminous ($2-5 \times 10^{38}$ erg s$^{-1}$) globular cluster X-ray sources in the Local Group. In a recent ACIS-S survey, we discovered that the source may be extended. We request one 5 ksec HRC-I observation to test whether the source can be resolved and one 10 ksec observation with ACIS-S to study its spectrum, which is heavily piled up in the survey data. The observations we propose will help determine if Bo 375 houses multiple bright sources and will provide input for physical models. We also request HST observations (1 orbit) to study the morphology of the cluster. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 00:45:45.60 +41:39:45.20 BO 375 HRC-I NONE 5.00 =================================================================================== Proposal Number: 04400674 Proposal Title: CYGNUS X-1: X-RAY DIPS, DISTANCE, AND THE X-RAY HALO PI: KATJA POTTSCHMIDT Subject Category: BH AND NS BINARIES Abstract: We propose a 50 ks HETG observation of the soft X-ray halo of Cyg X-1. The 0th order image of Cyg~X-1 will be blocked out (to avoid telemetry saturation). The observation will be scheduled during upper conjunction of the black hole, when pronounced soft X-ray absorption dips occur. Measurements of such flux variability mirrored at different annuli of the halo will place constraints on the distance and extent of the scattering dust cloud, as well as cross-check existing distance determinations for Cyg X-1 itself. The HETG spectrum of Cyg X-1 can be expected to show signatures of the widely unknown focused stellar wind of the O-star that is responsible for the absorption dips. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 19:58:21.70 +35:12:06.30 CYG X-1 ACIS-S HETG 50.00 =================================================================================== Proposal Number: 04400676 Proposal Title: RESOLVING THE LOW/HARD STATE OF CYGNUS X-1 WITH CHANDRA PI: WALTER LEWIN Subject Category: BH AND NS BINARIES Abstract: Galactic black holes with relativistic radio jets are called microquasars. These systems are seen at high inclination, partially obscuring their central accretion engine. Cygnus X-1 is seen relatively face-on; it might be regarded as a micro-Seyfert-1, and this may explain why a broad Fe K-alpha emission line consistent with emission from the inner disk is often observed in this source. We request a 60 ksec HETGS observation of Cygnus X-1 in the low/hard state to diagnose its accretion flow geometry in this state through precise Fe K alpha line spectroscopy. We will examine the nature of the companion wind via highly ionized absorption lines, to constrain its role in feeding the central engine. We will make simultaneous RXTE (2-250 keV) and Integral (3 keV - 10 MeV) observations. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 19:58:21.70 +35:12:05.80 CYGNUS X-1 ACIS-S HETG 60.00 =================================================================================== Proposal Number: 04400771 Proposal Title: THE ULTRALUMINOUS X-RAY SOURCE IN HOLMBERG II PI: PHILIP KAARET Subject Category: BH AND NS BINARIES Abstract: We propose to a program of Chandra and HST observations to test the recent suggestion that the bright X-ray source in Holmberg II is surrounded by a photoionization nebula powered by a central object with a luminosity of order 10^40 erg/s. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 08:19:29.70 +70:42:19.40 HOLMBERG II ULX HRC-I NONE 5.00 =================================================================================== Proposal Number: 04400900 Proposal Title: DUSTY SHOCKS AND PULSAR WINDS: IDENTIFYING THE SOURCE MODEL FOR G70.7+1.2 PI: ZAVEN ARZOUMANIAN Subject Category: BH AND NS BINARIES Abstract: The optical and radio nebula G70.7+1.2 has been the object of scrutiny and speculation for more than 50 years. In the last decade, unexpected discoveries made through multiwavelength observations have helped to discredit successive models of the object's nature and the mechanisms at work within it. Two models that explain most of the observed phenomena remain, one requiring a central Be-neutron star binary, the other a single star with a dusty wind. They make specific, distinct predictions for X-ray emission from the system. We propose to use the sensitivity and spatial resolution of Chandra's ACIS-S camera to discriminate between these two models, revealing at last the true nature of G70.7+1.2, and providing a unique new laboratory for testing models of bow-shock formation. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 20:04:23.60 +33:39:04.00 G70.7+1.2 ACIS-S NONE 40.00 =================================================================================== Proposal Number: 04400812 Proposal Title: A SEARCH FOR X-RAY EMISSION FROM OGLE-1999-BUL-32: THE "MISSING LINK" BETWEEN STELLAR MASS AND SUPERMASSIVE BLACK HOLES PI: W. THOMAS VESTRAND Subject Category: BH AND NS BINARIES Abstract: Straightforward interpretation of the spectacular new microlensing event OGLE-1999-BUL-32 indicates that the lens is either a 130 solar mass black hole at 500 pc or a 30 solar mass black hole at 6 kpc. We request a 50-ksec ACIS observation that will yield a limiting X-ray sensitivity which is more than two orders of magnitude deeper than the best existing limits. If detected, the observations would be powerful evidence for a class of isolated black holes with masses between those of stellar mass in X-ray binary systems and the supermassive black holes resident in the nuclei of galaxies. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 18:05:05.30 -28:34:42.50 OGLE-1999-BUL-32 ACIS-S NONE 10.00 =================================================================================== Proposal Number: 04400831 Proposal Title: QUIESCENT EMISSION FROM TRANSIENT ACCRETION-POWERED PULSARS PI: LARS BILDSTEN Subject Category: BH AND NS BINARIES Abstract: We propose to study the quiescent emission from transiently accreting X-ray pulsars. Reactions in the neutron star (NS) crust maintain the core at a temperature sufficient to make the NS emit a minimum thermal luminosity comparable to that observed in low-B transients; thus, we will detect sources in quiescence for the first time, at predicted fluxes. Using magnetic atmosphere models, we will measure the implied emission area radii, to compare with those measured from low-B transients. We will search for pulsations at the known periods, to constrain the fraction of the quiescent luminosity contributed by surface thermal emission, and spectrally disentangle the thermal emission from other emission mechanisms, such as accretion onto the NS magnetosphere. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 11:20:57.20 -61:55:00.30 A1118-616 ACIS-S NONE 20.00 11:48:00.00 -62:12:24.90 4U 1145-619 ACIS-S NONE 23.00 =================================================================================== Proposal Number: 04400982 Proposal Title: X-RAY TRANSMISSION SPECTROSCOPY DURING THE STAR-RISE OF HER X-1 PI: MARIO JIMENEZ-GARATE Subject Category: BH AND NS BINARIES Abstract: We propose to observe Her X-1 at the time in which the neutron star rises above the edge of the accretion disk. This phenomenon is due to disk precession. The enhanced line-of-sight optical depth from the disk atmosphere and corona will allow the detection of absorption edges and/or resonance lines, from species such as N VII, O VIII, Ne X, Mg XII, SI XIV, and Fe XXV, which we can use to determine the disk ionization structure, the elemental composition, the gas dynamics, and column density. The pre-rise and post-rise epochs likely exhibit line features from the disk and corona, and are best to search for P Cygni profiles from an equatorial disk-wind. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 16:57:50.50 +35:20:52.00 HER X-1 ACIS-S HETG 30.00 16:57:50.50 +35:20:52.00 HER X-1 ACIS-S HETG 30.00 =================================================================================== Proposal Number: 04400983 Proposal Title: EXPLORING ACCRETION DISKS: THE LINE-RICH SPECTRA OF X-RAY BINARY DIPPERS PI: MARIO JIMENEZ-GARATE Subject Category: BH AND NS BINARIES Abstract: We propose to obtain HETG spectra for two low-mass X-ray binary (LMXB) dippers, which likely exhibit prominent emission lines. Observations during the dip (or absorbed) phases, are equivalent to taking a "disk-coronagraph", which allows us to probe any circumsource structure. Using high-resolution spectroscopy, we can determine element abundance ratios, density, temperature, and measure emission-line profiles. With 4U1254-69 and 4U1323-619, we will complete the observed sample of bright, high-inclination LMXB, which will advance our understanding of their accretion disks. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:57:37.20 -69:17:21.00 4U1254-690 ACIS-S HETG 55.00 =================================================================================== Proposal Number: 04400876 Proposal Title: SNAPSHOT SURVEY OF FOUR LMXBS PI: DEEPTO CHAKRABARTY Subject Category: BH AND NS BINARIES Abstract: We request short snapshot observations of four LMXBs with ACIS/HETGS to further three independent science investigations. (1) We will measure the spectrum of 4U1822-000 and 4U1905+000 to test the hypothesis that they are ultracompact binaries. (2) We will measure the position of the X-ray burster 4U1702-429 in order to facilitate identification of its optical counterpart. (3) We will measure the position of the suspected symbiotic X-ray binary 4U1700+24 in order to test its association with a nearby red giant. In all four cases, we will combine our Chandra analysis with existing or approved ground-based optical/IR observations. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 18:25:22.00 +00:04:14.10 4U 1822-000 ACIS-S HETG 2.00 19:08:27.00 +00:10:07.60 4U 1905+000 ACIS-S HETG 5.00 =================================================================================== Proposal Number: 04400014 Proposal Title: NEUTRON STARS IN QUIESCENCE PI: STEPHEN MURRAY Subject Category: BH AND NS BINARIES Abstract: In order to distingush the effects of an event horizon associated with a black hole from a surface associated with a neutron star, we must compare their X-ray luminosities when in quiescence. Very few neutron star binaries have been detected, we plan to remedy this. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 16:03:54.00 -77:53:06.00 SAX J1603.9-7753 ACIS-S NONE 16.00 17:09:50.40 -26:37:06.70 XTE J1709-267 ACIS-I NONE 24.00 17:14:19.20 -34:02:58.00 2S1711-339 ACIS-S NONE 25.00 17:48:13.40 -36:07:53.00 A1744-361 ACIS-S NONE 16.00 17:58:40.00 -33:48:27.00 4U1755-33 ACIS-S NONE 24.00 =================================================================================== Proposal Number: 04400991 Proposal Title: ``QPO-FOLDED'' SPECTROSCOPIC OF THE LOW-MASS X-RAY BINARY AND DIPPER 4U 1323-62 PI: MARIANO MENDEZ Subject Category: BH AND NS BINARIES Abstract: We will use Chandra's ACIS-S detector in combination with the HETGS to do phase-resolved spectroscopy of the low-mass X-ray binary and dipper 4U 1323-62. Using the 1-Hz QPO that we recently discovered in this source we will construct ``QPO-folded'' light curves to study separately spectra from different QPO-phase intervals. We will correlate the presence/absence of emission and absorption features in the energy spectrum of Chandra with timing properties measured both by Chandra, and (already approved) simultaneous RXTE observations. This should help us determine how timing properties depend on mass accretion rate, and whether mass flows onto the central object through different channels of accretion. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 13:26:36.10 -62:08:10.00 4U 1323-619 ACIS-S HETG 40.00 =================================================================================== Proposal Number: 04400096 Proposal Title: SOFT X-RAY EMISSION FROM X-RAY BINARIES PI: MARIANO MENDEZ Subject Category: BH AND NS BINARIES Abstract: We will use Chandra's LETG/HRC-S to observe the neutron star binary EXO 0748-676 and the black-hole candidate Cyg X-1. We will correlate the presence/absence of emission and absorption features in the energy spectrum of Chandra with timing properties measured both by Chandra, and simultaneous RXTE observations. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 07:48:33.30 -67:45:00.00 EXO 0748-676 HRC-S LETG 40.00 =================================================================================== Proposal Number: 04400159 Proposal Title: FAINT NEUTRON STAR SOFT X-RAY TRANSIENTS IN QUIESCENCE PI: PETER JONKER Subject Category: BH AND NS BINARIES Abstract: It has been proposed that the magnetic fields of faint soft X-ray transients (SXTs) are not buried by the accreted matter. This would explain why SAX J1808.4-3658 shows pulsations and brighter SXTs don't. So far the only property separating SAX J1808.4-3658 from other SXTs is its low quiescent luminosity. Therefore, a quiescent luminosity as low as that of SAX J1808.4-3658 may be the tell-tale sign of systems showing pulsations when matter is accreting. We propose to obtain ACIS-S observations of two faint SXTs in quiescence. These observations will show whether the quiescent luminosity of the faint neutron star SXTs is indeed lower than those of bright neutron star SXTs such as e.g. Cen X-4. To achieve this the low interstellar absorption toward the selected sources is important. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 18:10:44.40 -26:08:60.00 SAX J1810.8-2609 ACIS-S NONE 35.00 =================================================================================== Proposal Number: 04408136 Proposal Title: AN HETGS OBSERVATION OF GX 339-4 IN THE LOW/HARD STATE: ACCRETION GEOMETRY, RELATIVITY, AND JET FORMATION PI: JON MILLER Subject Category: BH AND NS BINARIES Abstract: [The full SJ is contained in an email to the director.] A sensitive spectrum of a transient Galactic black hole in the low/hard state can address at least 3 of the most fundamental issues in X-ray astronomy: 1) major pictures for changes in accretion flow geometry with the mass accretion rate (m-dot), 2) relativistic effects near black holes, and 3) jet formation. GX 339-4 is an ideal target for this purpose. At present, grating spectra and even CCD spectra obtained from sources in this state have collected < 10^4 counts each (in the best cases), insufficient for strong constraints. Our proposed grating observation will obtain appx 10^6 counts in the dispersed spectrum. We will use continuum spectroscopy and the shape of the Fe K-alpha line to constrain the radial location of the inner disk, and thereby the nature of the flow geometry and the role of the disk in jet formation in the low/hard state. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 17:02:49.50 -48:47:23.00 GX 339-4 ACIS-S HETG 75.00 =================================================================================== Proposal Number: 04408138 Proposal Title: THE BHC SOFT X-RAY TRANSIENT XTE J1908+094 RETURNING TO QUIESCENCE PI: PETER JONKER Subject Category: BH AND NS BINARIES Abstract: With the Chandra satellite we can study the spectra of SXTs as they fade into quiescence. This has never been done for a BHC SXT! According to evolutionary and SXT outburst theories there may exist a whole class of persistent but faint accreting BHCs at low Mdot; their accretion disk is cold and hence not prone to the SXT outburst mechanism. Up to now there is very few information on spectral states for BHCs for ~2 orders of magnitude in flux (~10^-7-10^-5 Edd.; there is spectral information of BHCs in quiescence at ~10^-8 of Edd.). Gallo et al. 2003 have demonstrated the existence of a universal coupling between observed X-ray and radio flux from hard state BHCs, of the form L_radio~L_X^0.7, over three orders of magnitude. We propose to extend this relation down to ~5x10^-7 Edd. assuming d=10 kpc. This would demonstrate that jet production is the standard behavior and it is only in the limited range in Mdot in which a standard thin disc is formed that a jet is not produced. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 19:08:53.80 +09:23:04.90 XTE J1908+094 ACIS-S NONE 5.00 19:08:53.80 +09:23:04.90 XTE J1908+094 ACIS-S NONE 10.00 19:08:53.80 +09:23:04.90 XTE J1908+094 ACIS-S NONE 15.00 =================================================================================== Proposal Number: 04408141 Proposal Title: DETERMINATION OF THE POSITION OF THE MILLISECOND PULSAR XTE J1807-294 PI: CRAIG MARKWARDT Subject Category: BH AND NS BINARIES Abstract: Millisecond pulsars are probably the endpoint of evolution of low mass X-ray binaries (LMXBs). However, the actual detection of neutron star spin frequencies in LMXBs has been problematic. To date, four accreting millisecond pulsars have been found, with the fourth, XTE J1807-294 having been discovered 25 Feb 2003. Three of the four known pulsars have orbital periods of 35-43 min, which suggests that there is a common evolutionary origin. We request Chandra HRC-S observations in "Imaging Mode" primarily to determine the position. This will enable observations at other wavelengths. Detection of an optical counterpart of XTE J1807-294, in outburst or quiescence, can aid in determining the system size and inclination, but because of the confused galactic center region, it is important to have a precise a priori position. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 18:07:00.34 -29:24:18.32 XTE J1807-294 HRC-S NONE 3.00 *********************************************************************************** SN, SNR AND ISOLATED NS -------------------------------------------------- =================================================================================== Proposal Number: 04500003 Proposal Title: THE ORIGIN OF GAMMA-RAY BURSTS PI: ANDREW FRUCHTER Subject Category: SN, SNR AND ISOLATED NS Abstract: The rapid and accurate localization of gamma-ray bursts (GRBs) promised by a working HETE-2 during the coming year may well revolutionize our ability to study these enigmatic, highly luminous transients. We propose a program of HST and Chandra observations to capitalize on this extraordinary opportunity. We will perform some of the most stringent tests yet of the standard model, in which GRBs represent collimated relativistic outflows from collapsing massive stars. NICMOS imaging and STIS CCD spectroscopy will detect broad atomic features of supernovae underlying GRB optical transients, at luminosities more than three times fainter than SN 1998bw. Chandra spectroscopy will investigate whether the GRB X-ray lines are from metals freshly ripped from the stellar core by the GRB. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- GRB ACIS-S HETG 100.00 =================================================================================== Proposal Number: 04500008 Proposal Title: SNR E0102-72: COMPLETING THE PICTURE PI: CLAUDE CANIZARES Subject Category: SN, SNR AND ISOLATED NS Abstract: Chandra HETG observations of the SNR E0102-72 in the SMC reveal ejecta velocities of ~1000 km/sec and suggest pregressive ionization due to the reverse shock. These data have allowed us to generate a velocity map of the SNR, a crucial ingredient for creating a model of the 3D structure of the remnant. By observating the SNR at a second roll roughly orthogonal to the first, we will be able to complete this velocity map and refine our 3D model. Further, we will be able to extend our examination of the ionization structure and the radial profile at the reverse shock front. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 01:03:60.00 -72:01:56.00 1E0102.2-7219 ACIS-S HETG 140.00 =================================================================================== Proposal Number: 04500018 Proposal Title: MONITORING THE BIRTH OF SUPERNOVA REMNANT SNR1987A PI: DAVID BURROWS Subject Category: SN, SNR AND ISOLATED NS Abstract: SNR1987A presents a unique opportunity to observe the birth and early evolution of a supernova remnant at high spatial resolution. Chandra affords the opportunity to monitor the expansion and evolution of this remnant with high resolution X-ray images and spatially-resolved spectra. This proposal continues our program of regular observations of SNR1987A. We propose two 50 ks monitoring observations in AO4, spaced 6 months apart, to study the interaction of the blast wave with the circumstellar ring/disk. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:35:28.00 -69:16:11.10 SNR1987A ACIS-S NONE 25.00 05:35:28.00 -69:16:11.10 SNR1987A ACIS-S NONE 50.00 05:35:28.00 -69:16:11.10 SNR1987A ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04500034 Proposal Title: SIMULTANEOUS X-RAY AND OPTICAL HIGH SPEED PHOTOMETRY OF THE CRAB PULSAR PI: PETER PREDEHL Subject Category: SN, SNR AND ISOLATED NS Abstract: We propose to obtain contemporaneous X-ray and Optical observations of the Crab pulsar in order to determine the relative phase between the X-ray and optical pulses. Optical observations will be performed at Skinakas observatory of the university of Crete, Greece, using MPE's high speed optical photometer OPTIMA which provides an absolute time accuracy of 2-4 microseconds. In the HRC-S timing mode which we plan to use the accuracy to measure the X-ray pulse arriv l time is 100 microseconds. This is the first experiment which aims to determine the relative phase between the optical and X-ray wave bands. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:34:32.00 +22:00:52.00 CRAB PULSAR HRC-S LETG 10.00 =================================================================================== Proposal Number: 04500051 Proposal Title: OBSERVATION OF SNR G11.4-0.1 PI: GORDON GARMIRE Subject Category: SN, SNR AND ISOLATED NS Abstract: X-ray study of a distant SNR to explore whether a shell or comppsite remnant. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 18:10:47.00 -19:04:60.00 G11.4-0.1 ACIS-I NONE 20.00 =================================================================================== Proposal Number: 04500062 Proposal Title: ALTERNATE-PSR J1509-5850 : "VELA-LIKE" PULSAR FOUND IN THE PARKES MULTIBEAM PULSAR SURVEY PI: GORDON GARMIRE Subject Category: SN, SNR AND ISOLATED NS Abstract: The goal of this observation is to measure the X-ray spectrum of PSR J1509-5850 and detect its Pulsar Wind Nebula. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 15:09:27.10 -58:50:56.00 PSR J1509-5850 ACIS-S NONE 40.00 =================================================================================== Proposal Number: 04500141 Proposal Title: A DETAILED STUDY OF 3C58 - THE YOUNGEST KNOWN PULSAR NEBULA IN THE GALAXY PI: PATRICK SLANE Subject Category: SN, SNR AND ISOLATED NS Abstract: 3C58 is the youngest known Crab-like SNR in the Galaxy. Chandra observations have uncovered its young pulsar, provided an upper limit to its surface temperature which challenges standard models of NS cooling, and identified the termination shock of its wind. Structures in the nebula indicative of jets and particle outflows have also been revealed. 3C58 thus possesses all of the standard traits of a young pulsar system, and may be a more appropriate "prototype" than the Crab. Based on the foundation built from our initial studies, we propose a definitive X-ray study of 3C58 to study structure on scales of the telescope resolution, perform spectral mapping of the complex emission regions, and obtain a template for future studies of this remnant of SN 1181 at other wavelengths. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 02:05:37.90 +64:49:41.76 3C58 ACIS-S NONE 150.00 02:05:37.90 +64:49:41.76 3C58 ACIS-S NONE 50.00 02:05:37.90 +64:49:41.76 3C58 ACIS-S NONE 150.00 =================================================================================== Proposal Number: 04500164 Proposal Title: MULTI-EPOCH OBSERVATIONS OF PSR B1509-58 AND ITS NEBULA PI: BRYAN GAENSLER Subject Category: SN, SNR AND ISOLATED NS Abstract: Chandra observations of the Crab and Vela pulsars have revealed many remarkable and unexpected features in their nebulae, allowing us to make major progress in our understanding of pulsar winds. Our AO-1 observations of the young pulsar PSR B1509-58 show it to power a large and bright nebula containing many complex features, demonstrating this source to be the obvious next target worthy of detailed study. We therefore propose Chandra observations of PSR B1509-58 at four additional epochs, with the aim of measuring changes in the brightness, morphology and position of the nebular features as a function of time. These data will allow us to make detailed comparisons to our proposed models for the time-dependent evolution of the pulsar's wind. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 15:13:55.60 -59:08:09.20 PSR B1509-58 ACIS-I NONE 9.62 15:13:55.60 -59:08:09.20 PSR B1509-58 ACIS-I NONE 9.62 15:13:55.60 -59:08:09.20 PSR B1509-58 ACIS-I NONE 19.25 =================================================================================== Proposal Number: 04500172 Proposal Title: IMAGING AND SPECTROSCOPY OF THE PULSAR EXPECTED IN CTA1 PI: JULES HALPERN Subject Category: SN, SNR AND ISOLATED NS Abstract: The supernova remnant CTA1 that falls within the error box of the EGRET source 3EG J0010+7309 contains one of the best X-ray candidates for a radio-quiet gamma-ray pulsar. The superb imaging capability of Chandra can resolve the neutron star in the X-ray source RX J0007.0+7303 from its pulsar wind nebula (PWN), thus enabling a simultaneous study of the structure of the PWN, and the energetics of both thermal and nonthermal spectra from the pulsar itself. These results should motivate follow-up observations, as Chandra has done before, that may finally discover the pulsations. We have also obtained deep images of this field in B, V, and R, that can be used to search for the optical counterpart of the pulsar once the precise X-ray position is determined by Chandra. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 00:07:00.00 +73:03:03.00 RX J0007.0+7303 ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04500174 Proposal Title: REVEALING THE PULSAR COUNTERPARTS OF EGRET SOURCES PI: JULES HALPERN Subject Category: SN, SNR AND ISOLATED NS Abstract: Empowered by the superb imaging performance of Chandra, we are making good progress in determining the nature of the persistent high-energy gamma-ray sources in the Galaxy. Young pulsar counterparts are being found directly by resolving point sources within synchrotron nebulae to distances of 2-4 kpc, where the most luminous EGRET sources reside. At intermediate Galactic latitudes, precise Chandra astrometry is establishing the existence of nearby, older neutron stars, by the absence of optical counterparts. Following our successes using both of these methods, we propose to pinpoint a set of previously studied candidates, which will make a significant addition to the population of young, energetic pulsars, and/or nearby older neutron stars that are also efficient gamma-ray pulsars. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 20:35:40.00 +42:22:60.00 GEV J2035+4214 ACIS-I NONE 20.00 =================================================================================== Proposal Number: 04500223 Proposal Title: STUDYING HIGH MACH NUMBER SHOCKS IN YOUNG SUPERNOVA REMNANTS WITH CHANDRA PI: JOHN HUGHES Subject Category: SN, SNR AND ISOLATED NS Abstract: We propose deep imaging of the full extents of the young supernova remnants SN1006, Tycho, and G292.0+1.8. These images are optimized for proper motion measurements for which Chandra's superb angular resolution is uniquely suited and will yield significant results when compared to earlier Chandra, ROSAT, and Einstein images. The new X-ray data, in conjunction with our new radio observations, will address questions concerning the physics of ultra-high-Mach-number collisionless shocks, the efficiency of cosmic-ray acceleration, the dynamics of ejecta-dominated SNRs, and the small-scale structure of SN ejecta. These observations will serve as a legacy of the Chandra mission and will provide invaluable data for future research on SNRs and cosmic rays. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 00:25:19.00 +64:08:10.00 TYCHO'S SNR ACIS-I NONE 150.00 15:02:55.00 -41:55:30.00 SN1006 ACIS-I NONE 20.00 15:02:55.00 -41:55:30.00 SN1006 ACIS-I NONE 20.00 15:02:55.00 -41:55:30.00 SN1006 ACIS-I NONE 20.00 15:02:55.00 -41:55:30.00 SN1006 ACIS-I NONE 20.00 15:02:55.00 -41:55:30.00 SN1006 ACIS-I NONE 20.00 15:02:55.00 -41:55:30.00 SN1006 ACIS-I NONE 20.00 15:02:55.00 -41:55:30.00 SN1006 ACIS-I NONE 20.00 15:02:55.00 -41:55:30.00 SN1006 ACIS-I NONE 20.00 15:02:55.00 -41:55:30.00 SN1006 ACIS-I NONE 20.00 15:02:55.00 -41:55:30.00 SN1006 ACIS-I NONE 20.00 15:02:55.00 -41:55:30.00 SN1006 ACIS-I NONE 20.00 =================================================================================== Proposal Number: 04500227 Proposal Title: SUPERNOVA REMNANT(S) AND STAR-FORMING REGIONS IN THE W51 COMPLEX PI: BON-CHUL KOO Subject Category: SN, SNR AND ISOLATED NS Abstract: W51B+C is one of the few regions in the Galaxy where we can study the formation of massive stars and the consequence of their violent explosions simultaneously. It is composed of an active star forming region, W51B, and an old SNR, W51C. There is strong evidence suggesting that the SNR is interacting with the star-forming molecular clouds. We propose 2 short pointings at the central region of the SNR to search for pulsars and evaporating molecular clumps. A third pointing at the adjacent star-forming region W51B will locate stellar X-ray sources, and will distinguish the X-rays associated with the star-forming region from the X-rays associated with the SNR. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 19:22:28.00 +14:04:60.00 W51B ACIS-I NONE 30.00 19:22:60.00 +14:15:00.00 W51 NORTH ACIS-I NONE 12.00 19:23:30.00 +14:04:60.00 W51 SOUTH ACIS-I NONE 12.00 =================================================================================== Proposal Number: 04500228 Proposal Title: THE X-RAY NEBULA OF PSR B1046-58 PI: VICTORIA KASPI Subject Category: SN, SNR AND ISOLATED NS Abstract: Pulsar wind nebulae (PWNe), well studied with Chandra, are a result of confinement of the relativistic wind produced by rotation-powered pulsars. In sources studied thus far, confinement is by either the high pressure in the interior of a supernova remnant, or of ram-pressure due to the pulsar velocity and ambient density. Here we request 36~ks of ACIS time to study the PWN around the young, energetic pulsar PSR B1046-58. This PWN, according to basic reasoning, should not exist, as there is no obvious wind confinement mechanism. Yet ASCA observations reveal a relatively bright nebula. Using Chandra's high spatial resolution, we will, for the first, time, resolve the features in this PWN, in order to solve the mystery and determine how this PWN is produced. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 10:48:12.20 -58:32:05.80 PSR B1046-58 ACIS-S NONE 36.00 =================================================================================== Proposal Number: 04500301 Proposal Title: A JET-CLOUD INTERACTION IN W50: THE GALACTIC MICRO-QUASAR ASSOCIATED WITH SS 433 PI: SAMAR SAFI-HARB Subject Category: SN, SNR AND ISOLATED NS Abstract: W50 is the only Galactic supernova remnant known to harbor a binary twin-jet compact object: SS 433. Our study of this fascinating SNR reveals two X-ray lobes having a knotty morphology. In the western lobe, we have evidence (from a multiwavelength campaign) of a cloud interacting with SS433's receding jet. We propose a 75 ksec ACIS-I pointing at the peak of W50-west to 1) spatially resolve thermal and non-thermal emission in the shock-excited regions, and 2) search for arcsecond-scale shock structures expected from the deposition of energy of a fast moving jet into a cloud. Chandra will provide an exquisite image and a good understanding of a Galactic micro-quasar, whose study provides a bridge from the smallest scale nebulae to the extragalactic radio jets. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 19:09:45.00 +05:01:29.00 W50-WEST ACIS-I NONE 75.00 =================================================================================== Proposal Number: 04500320 Proposal Title: SUPERNOVA REMNANTS: HOMES FOR YOUNG NEUTRON STARS PI: DAVID HELFAND Subject Category: SN, SNR AND ISOLATED NS Abstract: Composite supernova remnants are the expected products of Type II supernovae, yet they comprise less than 15% of the known remnants in the Galaxy. The range of synchrotron core parameters provide a crucial window on the physics of stellar collapse, while the surrounding shell offers an age estimate as well as an assay of the elements produced in the explosion. G16.7+0.1 & G351.2+0.1 are small-diameter composite remnants containing weak radio cores; the former has recently been detected with XMM, while mid-infrared observations of the latter show that its inverted radio spectral index extends at least to 20 microns. We propose to observe both remnants in order to define the nature of their pulsar wind nebulae and to constrain the parameters of the neutron stars which power them. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 17:22:24.70 -36:10:60.00 G351.2+0.1 ACIS-S NONE 15.00 18:20:57.80 -14:20:09.60 G16.7+0.1 ACIS-S NONE 25.00 =================================================================================== Proposal Number: 04500326 Proposal Title: A STUDY OF THE X-RAY LUMINOUS NORTHWESTERN RIM OF THE GALACTIC SUPERNOVA REMNANT G266.2-1.2 PI: THOMAS PANNUTI Subject Category: SN, SNR AND ISOLATED NS Abstract: G266.2-1.2 is a young shell-type supernova remnant with an X-ray spectrum dominated by non-thermal emission. Previous X-ray studies of this remnant by ASCA and ROSAT revealed that the northwestern rim of G266.2-1.2 is particularly luminous, but these observations lacked the capability of resolving this rim and the true nature of the rim's spectrum (thermal or non-thermal) has been debated. To investigate this rim in more detail, we propose to conduct a high-resolution observation using Chandra. it is very likely that the rim is a site of cosmic-ray acceleration, and the data will be analyzed to study this phenomenon in detail. We will also search for thermal emission from smaller structures within the rim to take advantage of Chandra's unprecedented high angular resolution capabilities. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 08:49:07.92 -45:37:44.40 G266.2-1.2 - NW ACIS-S NONE 35.00 08:49:07.92 -45:37:44.40 G266.2-1.2 - NW ACIS-S NONE 40.00 =================================================================================== Proposal Number: 04500278 Proposal Title: SUPERNOVA REMNANTS IN THE MAGELLANIC CLOUDS PI: FREDERICK SEWARD Subject Category: SN, SNR AND ISOLATED NS Abstract: Chandra has now observed 20 of the brightest remnants in the Magellanic Clouds. Because the distances are known and the absorption low, this set is going to yield definitive data on remnant characteristics and evolution. We propose to observe 6 more remnants in the LMC. All are fainter and some are larger than those in the observed sample. We expect to see faint central sources and previously unobserved structure. These observations will span a region of parameter space not covered in the presently-observed sample aad will include some remnants with unique interesting features. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 04:54:30.00 -67:13:00.00 0454-672 [N9] ACIS-S NONE 68.00 05:31:60.00 -71:00:20.00 0532-710 [N206] ACIS-S NONE 34.00 05:31:60.00 -71:00:20.00 0532-710 [N206] ACIS-S NONE 34.00 05:40:00.00 -69:44:15.00 0540-697 ACIS-S NONE 21.00 05:50:35.00 -68:20:60.00 0550-683 ACIS-S NONE 68.00 =================================================================================== Proposal Number: 04500351 Proposal Title: GALACTIC GEV GEMINGAS: POINT SOURCE PARAMETERS AND COMPACT PWN PI: ROGER ROMANI Subject Category: SN, SNR AND ISOLATED NS Abstract: We propose an imaging survey of our newly discovered X-ray counterparts of Galactic GeV sources. The targets selected have no known radio pulsar identification, but resemble identified pulsar/wind nebula complexes, with hard spectra and modest absorption. The ACSA discovery data could not separate the pulsar point source candidates, make accurate measurements of the flux and absorption or map the fine structure in the surrounding diffuse emission. Short ACIS imaging observations efficiently use CXO's sensitivity and resolution to accomplish all of these goals. These observations will test the pulsar model for these GeV sources, will set the stage for sensitive pulse searches and will help us decide if Geminga is unique or the archetype of a new Galactic population. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 18:25:50.00 -13:00:10.00 GEV J1825-1310 ACIS-I NONE 15.00 =================================================================================== Proposal Number: 04500364 Proposal Title: OBSERVING THE THERMAL COMPOSITE SNR KES 27 PI: FREDERICK SEWARD Subject Category: SN, SNR AND ISOLATED NS Abstract: An AO-2 ACIS-I observation of Kes 79 has yielded some unexpected results, including a central point source with AXP-like spectrum and many filaments possibly caused by shock-cloud interaction. We propose a 40 ksec ACIS-I observation to a similar SNR to Kes 79: Kes 27. Kes 27 is a thermal composite SNR with a number of unusual properties: one of the youngest thermal composites, the least swept-up mass, limb-brightening at the east and a hard tail above 5 keV. Two point sources revealed by ROSAT inside the remnant can be candidates for a central pulsar. With the proposed observation, we will be able to identify an interior pulsar with any associated nebula, resolve fine structures like filaments, understand its center-filled morphology, and locate the hard tail. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 15:48:31.50 -53:46:20.00 KES 27 ACIS-I NONE 40.00 =================================================================================== Proposal Number: 04500372 Proposal Title: X-RAY EMISSION FROM YOUNG RADIO PULSARS DISCOVERED IN THE PARKES MULTIBEAM SURVEY PI: DIVAS SANWAL Subject Category: SN, SNR AND ISOLATED NS Abstract: The young (characteristic age = 10--100 kyr) pulsars represent a transition group from the very young pulsars, characterized by strong nonthermal radiation and bright synchrotron pulsar wind nebulae, to the middle aged pulsars, characterized by the thermal radiation. The investigation of these pulsars allows us to understand the transition from very young to middle-aged pulsars and constrain the parameters responsible for pulsar evolution, and potentially detect the PWN around these pulsars. Therefore, we propose to observe four young pulsars recently discovered in the Parkes Multibeam Pulsar Survey. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 18:09:43.20 -19:17:47.00 PSR J1809-1917 ACIS-S NONE 20.00 19:13:20.30 +10:11:23.00 PSR J1913+1011 ACIS-S NONE 20.00 =================================================================================== Proposal Number: 04500388 Proposal Title: FREE AT LAST: AN ENERGETIC PULSAR ESCAPES ITS SUPERNOVA REMNANT PI: FERNANDO CAMILO Subject Category: SN, SNR AND ISOLATED NS Abstract: PSR J1016-5857 is a young and energetic pulsar located just outside the supernova remnant (SNR) G284.3-1.8. The morphology of the system argues that the pulsar has a high space velocity, and has caught up with and now overtaken its associated SNR. We have identified an EINSTEIN source, which in the above hypothesis is likely to be a cometary nebula powered by the pulsar. We here propose a short CHANDRA observation of this X-ray source to determine whether it is indeed associated with the pulsar. With the resulting morphological data, we can confirm or refute the pulsar/SNR association, and can probe the pulsar's spin history and interaction with its environment. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 10:16:21.20 -58:57:12.00 PSR J1016-5857 ACIS-S NONE 19.00 =================================================================================== Proposal Number: 04500442 Proposal Title: CHANDRA OBSERVATIONS OF THE UNIDENTIFIED GAMMA-RAY SOURCE IN GAMMA-CYGNI PI: WERNER BECKER Subject Category: SN, SNR AND ISOLATED NS Abstract: The nature of the unidentified gamma-ray source 2CG078+2 in the SNR G78.2+2.1 is a mystery since its discovery in the mid 70's with COS-B. Although its gamma-ray emission properties strongly argue for a Geminga-like radio-silent neutron star, this is not more than a working hypothesis. ROSAT observations of the remnant have discovered a possible X-ray counterpart in the 20' x 14' arcmin small EGRET error box. The sparse ROSAT data, however, do not support a detailed analysis nor do they provide an accurate position. Both are badly needed for further identification. We propose a 30 ksec ACIS-I observation of RX J2020.2+4026 to determine its position with sub-arcsec accuracy and to obtain enough counts for a detailed spectral analysis of this putative gamma-ray counterpart. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 20:20:17.00 +40:26:09.00 RX J2020.3+4026 ACIS-S NONE 30.00 =================================================================================== Proposal Number: 04500502 Proposal Title: TOO OBSERVATIONS OF SOFT GAMMA REPEATERS PI: PETER WOODS Subject Category: SN, SNR AND ISOLATED NS Abstract: Soft Gamma Repeaters are rare sources of transient burst emission, probably magnetars (i.e. strongly magnetized neutron stars). Each of the SGRs has a persistent X-ray counterpart and some show coherent pulsations. During burst active phases, these counterparts undergo changes in their energy spectrum and pulse properties. Measuring the effects of burst activity are diagnostic of the burst mechanism and their nature in general. In the event of detection of substantial burst activity from an SGR, we propose to make Chandra ToO observations of any of the four known sources, SGR 1900+14, SGR 1806-20, SGR 1627-41, SGR 0526-66, the SGR candidate SGR 1801-23, as well as any newly discovered SGR source. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- Any SGR ACIS-I NONE 5.00 19:07:14.30 +09:19:20.10 SGR 1900+14 ACIS-S NONE 20.00 19:07:14.30 +09:19:20.10 SGR 1900+14 ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04500500 Proposal Title: PHASE RESOLVED SPECTROSCOPY OF THE VELA PULSAR PI: GEORGE PAVLOV Subject Category: SN, SNR AND ISOLATED NS Abstract: The superb angular resolution of Chandra has allowed us to resolve the Vela pulsar from its pulsar-wind nebula and prove that the phase-integrated pulsar spectrum consists of a soft thermal component and a hard magnetospheric component. The energy-integrated light curve has at least three peaks per period, whose origin remains unclear. To constrain the properties of the superdense matter, infer the temperature and magnetic field distributions over the neutron star surface, and elucidate the mechanisms of the multiwavelength magnetospheric radiation, we propose an ACIS-S observation of the Vela pulsar. High-quality phase-resolved spectroscopy and energy-resolved timing of 200,000 pulsar photons will allow the first detailed comparison with the theoretical models. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 08:35:20.70 -45:10:35.70 VELA PULSAR ACIS-S NONE 5.00 08:35:20.70 -45:10:35.70 VELA PULSAR ACIS-S NONE 40.00 =================================================================================== Proposal Number: 04500504 Proposal Title: PROBING THE NATURE OF THE TORQUE VARIABILITY IN SGR 1900+14 PI: PETER WOODS Subject Category: SN, SNR AND ISOLATED NS Abstract: Soft Gamma Repeaters (SGRs) are sources of transient burst emission, widely believed to be strongly magnetized neutron stars or magnetars. Each of the four known SGRs has a persistent X-ray counterpart; two of which show coherent pulsations and rapid spindown, presumably due to magnetic braking. The infered torque on SGR 1900+14 has been shown to vary by more than a factor 5, uncorrelated with the burst behavior. Here, we propose for a sequence of Chandra observations to simultaneously monitor the flux/spectrum and the torque (through RXTE/PCA) of SGR 1900+14. Studying the correlated behavior will allow us to constrain the underlying physical mechanism responsible for the torque in this system, and thereby, better understand the nature of this source. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 19:07:14.30 +09:19:20.10 SGR 1900+14 ACIS-S NONE 25.00 19:07:14.30 +09:19:20.10 SGR 1900+14 ACIS-S NONE 25.00 19:07:14.30 +09:19:20.10 SGR 1900+14 ACIS-S NONE 25.00 =================================================================================== Proposal Number: 04500584 Proposal Title: REVEALING THE PULSAR IN SUPERNOVA REMNANT G54.1+0.3 PI: FANGJUN LU Subject Category: SN, SNR AND ISOLATED NS Abstract: A recent X-ray observation of the supernova remnant G54.1+0.3 has revealed a near twin of the Crab Nebula. The basic spectral and morphological characteristics of G54.1+0.3 mimic those of the Crab Nebula in all respects. However, pulsation from the central compact source -- the putative pulsar energizing the nebula, has yet to be found. We propose to search for periodicity from the central source using the ACIS in the continuum-clocking mode. Detecting the pulsar will allow us to conduct phase-resolved X-ray spectroscopy and to put important constraints on the pulsar X-ray emission mechanism and on the interaction between the pulsar wind and the nebula. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 19:30:30.10 +18:52:14.10 SNR G54.1+0.3 ACIS-I NONE 60.00 =================================================================================== Proposal Number: 04500588 Proposal Title: PROMPT CHANDRA OBSERVATIONS OF NEARBY SUPERNOVAE PI: WALTER LEWIN Subject Category: SN, SNR AND ISOLATED NS Abstract: We propose to continue our studies of Type II and Type Ib/c supernovae (SNe). Our work on SNe 1999em and 1998S has shown that Chandra spectra can reveal details of the star's pre-SN evolution and of the interaction of the circumstellar matter and the SN ejecta (which is similar to the GRB afterglow phase), which cannot be obtained from any other wavelength regime. Our X-ray spectra of 1998S revealed for the first time in a young SN a wealth of heavy element over-abundances (Ne, Al, Si, S, Ar, and Fe) which could be used to constrain the progenitor's mass. In the years to come, no doubt, a wide variety of SNe will be observed with Chandra, and ultimately a picture will emerge that will substantially deepen our knowledge. With SN 1998S we have only begun to scratch the surface. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- SN WITHIN 10 MPC ACIS-S NONE 50.00 SN WITHIN 10 MPC ACIS-S NONE 50.00 SN WITHIN 10 MPC ACIS-S NONE 50.00 SN WITHIN 10 MPC ACIS-S NONE 50.00 SN BETWEEN 10 AND 25 ACIS-S NONE 50.00 SN BETWEEN 10 AND 25 ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04500615 Proposal Title: X-RAY BURSTS FROM ANOMALOUS X-RAY PULSARS PI: VICTORIA KASPI Subject Category: SN, SNR AND ISOLATED NS Abstract: We have recently discovered two X-ray bursts from the direction of the anomalous X-ray pulsar (AXP) 1E 1048.1-5937 in data obtained with the PCA aboard the RXTE. The probability that these represent the discovery of X-ray bursts from an anomalous X-ray pulsar, like those seen in soft gamma repeaters (SGRs), is very high. We request a Chandra TOO observation of 1E 1048.1-5937 or any AXP, to be triggered by the detection of bursting behavior using data from our already-approved RXTE monitoring project. The confirmation that X-ray bursts are indeed coming from the precise position of 1E 1048.1-5937 would be a landmark discovery, and a major victory for the magnetar model for AXPs and SGRs. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 10:50:08.90 -59:53:20.40 Any AXP ACIS-S NONE 30.00 10:50:08.90 -59:53:20.40 Any AXP ACIS-S NONE 30.00 =================================================================================== Proposal Number: 04500629 Proposal Title: CHANDRA TOO OBSERVATIONS OF TYPE IA SUPERNOVAE PI: JOHN HUGHES Subject Category: SN, SNR AND ISOLATED NS Abstract: One of the major unsolved problems in supernova research concerns the precise nature of the progenitor systems of Type Ia supernovae. We propose Chandra target-of-opportunity observations of a bright Type Ia supernova in order to better constrain the circumstellar environment of the progenitor and therefore shed light on the nature of the precursor star. The ability of our team to rapidly determine whether a supernova meets our trigger criteria, coupled with the broadband sensitivity and rapid response of Chandra, means that the proposed observations will be more than an order of magnitude more sensitive than any previous ones obtained in any waveband: X-ray, optical or radio. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- SN IA TOO ACIS-S NONE 20.00 SN IA TOO ACIS-S NONE 20.00 =================================================================================== Proposal Number: 04500664 Proposal Title: DEM L71: SHOCK PHYSICS AT HIGH RESOLUTION PI: CARA RAKOWSKI Subject Category: SN, SNR AND ISOLATED NS Abstract: We propose a deep {\it Chandra} observation of the Balmer-dominated SNR, DEM~L71, to unambigously constrain the electron temperature immediately behind the blastwave, at locations of varying shock speed. Combined with the proton temperature derived from our existing H$\alpha$ spectra, we will determine the degree of electron-proton temperature equilibration at the shock front. We will use an ACS WFC H$\alpha$ image to localize the position of the blastwave to 0.1$^{\arcsec}$ and thereby constrain the shock geometry, a critical component in fitting the blastwave X-ray spectra. An ACS WFC [O~III] image will identify regions to avoid in our X-ray spectral analysis, where the onset of radiative cooling behind the shock invalidates the interpretation of our H$\alpha$ spectra. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:05:41.70 -67:52:38.00 DEM L71 ACIS-S NONE 110.00 =================================================================================== Proposal Number: 04500049 Proposal Title: OBSERVATION OF SNR RCW103 PI: GORDON GARMIRE Subject Category: SN, SNR AND ISOLATED NS Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 16:17:36.30 -51:02:25.00 RCW103 ACIS-S NONE 5.00 16:17:36.30 -51:02:25.00 RCW103 ACIS-S NONE 5.00 16:17:36.30 -51:02:25.00 RCW103 ACIS-S NONE 5.00 16:17:36.30 -51:02:25.00 RCW103 ACIS-S NONE 5.00 =================================================================================== Proposal Number: 04500745 Proposal Title: UNRAVELING THE COOLING TREND OF A MAGNETAR: STUDY OF SOFT GAMMA REPEATER SGR 1627-41 PI: CHRYSSA KOUVELIOTOU Subject Category: SN, SNR AND ISOLATED NS Abstract: We propose a 50 ksec observation to measure the flux of SGR 1627-41. Our first Chandra observation found the source flux level to be ten times less than the projected value estimated from the decaying trend of the source we established with 2.3 years of monitoring. Establishing the decaying trend of the source will provide insight in the cooling mode of a magnetar and probe neutron star fundamental properties, such as heat transfer and dissipation. Further, if the source is found to continue this extreme decay, we will have the first evidence of the existence of extremely faint magnetars, which has direct consequences for their total numbers in our galaxy and their link with other objects, such as Dim Isolated Neutron Stars. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 16:35:51.80 -47:35:23.30 SGR 1627-41 ACIS-S NONE 25.00 =================================================================================== Proposal Number: 04500748 Proposal Title: COMPLETING THE CENSUS OF COMPACT OBJECTS IN SUPERNOVA REMNANTS PI: DAVID KAPLAN Subject Category: SN, SNR AND ISOLATED NS Abstract: That neutron stars exhibit wide diversity has been dramatically illustrated by the enigmatic central objects in Cas A and SN 1987A. To quantify this diversity, we have begun a systematic program to identify central sources in all supernova remnants (SNRs) within 5 kpc. With Chandra we are now investigating nine small-diameter SNRs, and have requested XMM observations of seven medium-diameter SNRs. Here we propose Chandra observations of suspected central objects in the remaining six (largest) SNRs. We are undertaking vigorous multi-wavelength observations to eliminate interlopers. When complete, our program, in conjunction with archival data, will provide a coherent census of neutron stars --- an enduring legacy of the Chandra mission. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 04:57:07.40 +45:27:51.00 RX J045707.4+452751 ACIS-S NONE 5.00 05:03:39.80 +45:17:15.00 RX J050339.8+451715 ACIS-S NONE 5.00 06:27:40.30 +07:31:03.00 RX J062740.3+073103 ACIS-S NONE 3.00 06:30:03.50 +05:45:34.00 LNS1 ACIS-S NONE 3.00 06:33:34.00 +06:08:52.00 LNS 3 ACIS-S NONE 3.00 06:39:25.90 +05:15:11.00 LNS 6 ACIS-S NONE 3.00 15:01:39.60 -40:38:15.00 RX J150139.6-403815 ACIS-S NONE 3.00 15:08:18.80 -40:17:30.00 RX J150818.8-401730 ACIS-S NONE 3.00 15:19:42.80 -37:52:55.00 RX J151942.8-375255 ACIS-S NONE 3.00 19:32:28.60 +34:53:18.00 RX J193228.6+345318 ACIS-S NONE 3.00 19:34:58.10 +33:53:01.50 RX J193458.1+335301 ACIS-S NONE 3.00 20:49:35.70 +29:38:57.00 AX J2049.6+2939 ACIS-S NONE 3.00 20:50:42.90 +28:46:43.50 RX J205042.9+284643 ACIS-S NONE 3.00 =================================================================================== Proposal Number: 04500774 Proposal Title: IS AX J1845-0258 AN ANOMALOUS X-RAY PULSAR? PI: VICTORIA KASPI Subject Category: SN, SNR AND ISOLATED NS Abstract: The young 7 s pulsar AX J1845-0258 has properties that strongly suggest that it is a member of the rare class of "anomalous X-ray pulsars" (AXPs), and may be a magnetar. However, its spin-down rate, hence its magnetic field, has not been measured because the source has exhibited unusual flux variability. This source represents a possible challenge to the magnetar model, or may be a new manifestation of young neutron stars. We request seven short ACIS-S observations of AX J1845-0258 for use in a carefully crafted observing plan that will allow us to determine the pulsar's spin-down rate, hence test the AXP identification, while simultaneously quantifying its flux variability for the first time in a meaningful way. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 18:44:54.60 -02:56:53.00 AX J1845-0258 ACIS-S NONE 12.00 18:44:54.60 -02:56:53.00 AX J1845-0258 ACIS-S NONE 12.00 18:44:54.60 -02:56:53.00 AX J1845-0258 ACIS-S NONE 12.00 18:44:54.60 -02:56:53.00 AX J1845-0258 ACIS-S NONE 12.00 18:44:54.60 -02:56:53.00 AX J1845-0258 ACIS-S NONE 12.00 18:44:54.60 -02:56:53.00 AX J1845-0258 ACIS-S NONE 12.00 18:44:54.60 -02:56:53.00 AX J1845-0258 ACIS-S NONE 20.00 =================================================================================== Proposal Number: 04500809 Proposal Title: EXPLORING THE ZOO OF NEUTRON STARS: HUNTING CGPS SNRS WITH CHANDRA PI: SAMAR SAFI-HARB Subject Category: SN, SNR AND ISOLATED NS Abstract: The number of X-ray pulsars and plerions associated with supernova remnants (SNRs) has been continuously increasing, thanks to Chandra's superb resolution. These discoveries are advancing our understanding of the birth properties and evolution of neutron stars, and challenging decades of theoretical work, by revealing a new class of puzzling compact objects. Expanding the sample of neutron star-SNR associations is needed to address this growing zoo. Two young faint SNRs recently discovered by the Canadian Galactic Plane Survey (CGPS), and a third nearby remnant, are classified as Shells--yet they have a centrally-filled X-ray morphology hinting at the presence of compact objects. We propose to observe them with ACIS to primarily hunt for their putative collapsed cores. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 20:50:58.00 +45:21:35.00 G85.4+0.7 ACIS-S NONE 14.50 20:59:02.20 +44:53:53.40 G85.9-0.6 ACIS-S NONE 20.00 =================================================================================== Proposal Number: 04500821 Proposal Title: PLERIONS WITH HOLES? THE UNUSUAL SUPERNOVA REMNANTS DA 495 AND G76.9+1.0 PI: ZAVEN ARZOUMANIAN Subject Category: SN, SNR AND ISOLATED NS Abstract: We request a total of 50 ks to observe with Chandra two synchrotron nebulae that resemble the Crab in many respects but are unusual in their spectral and morphological properties---most notably, they exhibit distinct minima in radio flux at their geometrical centers. The nebulae appear to be best described as old plerionic supernova remnants. Our Chandra observations will image the extended, non-thermal radio structures and reveal their spectra, test for the presence of X-ray ``holes'' associated with the radio minima, and unearth any small-scale features (jets, tori) around their central engines. Our results will allow for unambiguous classification of these objects and will test long-held theories of plerion evolution at late times, an observationally unconstrained regime. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 19:52:16.80 +29:25:55.20 DA 495 ACIS-I NONE 25.00 =================================================================================== Proposal Number: 04500859 Proposal Title: PSR J2021+3651: A GAMMA-RAY PULSAR AT THE EDGE OF THE GALAXY? PI: MALLORY ROBERTS Subject Category: SN, SNR AND ISOLATED NS Abstract: We have recently discovered a young, energetic pulsar coincident with a compact, hard, X-ray source within the error box of the high-energy gamma-ray source 2CG 075+00 / GeV J2020+3658. The high dispersion measure indicates an extroadinarily large distance for both the gamma-ray and X-ray luminosity. We propose to image the X-ray source in order to resolve the morphology of the presumed pulsar wind nebula, obtain an accurate absorption measurement, and determine a precise position relative to a nearby radio supernova remnant candidate. We also propose to perform a continuous clocking observation to detect X-ray pulsations and avoid problems of pile-up and confusion for the pulsed spectrum. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 20:21:05.20 +36:51:08.40 PSR J2021+3651 ACIS-S NONE 20.00 20:21:05.20 +36:51:08.40 PSR J2021+3651 ACIS-S NONE 20.00 =================================================================================== Proposal Number: 04500911 Proposal Title: THE PULSAR WIND NEBULA AROUND PSR 0656+14 PI: VYACHESLAV ZAVLIN Subject Category: SN, SNR AND ISOLATED NS Abstract: PSR B0656+14 (characteristic age = 110 kyr) is the youngest and the brightest of the X-ray detected middle-aged radio pulsars. The X-ray spectrum consists of at least two components, a soft thermal component and a hard component interpreted as a power-law. Chandra observations have provided evidence for extended emission around the pulsar with a characteristic size of about 3-5 arcseconds, the pulsar-wind nebula (PWN) around the pulsar. The observed properties of the PWN are compatible with the predictions of the theoretical models. We propose an observation of the pulsar and its PWN with HRC-I. This observation will provide the image without instrumental artifacts to confirm the detection of the PWN, and measure its luminosity and morphology. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 06:59:48.10 +14:14:21.50 PSR B0656+14 HRC-I NONE 40.00 =================================================================================== Proposal Number: 04500909 Proposal Title: SUPERNOVA REMNANTS IN THE N19 HII COMPLEX PI: ROSA WILLIAMS Subject Category: SN, SNR AND ISOLATED NS Abstract: The N19 HII complex in the Small Magellanic Cloud offers an unrivaled opportunity to study an active HII region as a coherent whole. It contains several supernova remnants (SNRs) within a small spatial extent, which enables us to examine these SNRs in the physical context of their surroundings. We propose Chandra ACIS observations to spatially resolve individual X-ray features in the complex; obtain spectra for each spatial component; and determine the actual number and distribution of SNRs in N19. These X-ray data will also help to constrain physical properties of the SNRs, such as progenitor populations, energetics, and ages. The results will extend our knowledge of SNR evolution within the kind of complex regions that may eventually form superbubbles. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 00:47:17.00 -73:08:22.00 N 19 AREA ACIS-S NONE 75.00 =================================================================================== Proposal Number: 04500914 Proposal Title: THE ORIGIN OF X-RAY RICH GAMMA-RAY BURSTS: HIGH-Z EVENTS AND NEW COSMIC EXPLOSIONS PI: LUIGI PIRO Subject Category: SN, SNR AND ISOLATED NS Abstract: X-ray Flashes (XRF, aka X-ray rich GRB's) have been recently identified as a new class of GRB. This class could hide some of the long-sought members of high-z GRB. For an event at $z>5$, the peak of the gamma-ray emission would be redshifted into the X-ray band and absorption by Ly$_{\alpha}$ forest clouds would effectively estinguish optical photons. Thus, a high-z GRB would appear as a {\it optically dark X-ray rich GRB}. They could also be a new type of cosmic explosion, likely similar to a GRB, but in which the fireball expansion is mildly relativistic ("dirty" fireball). We propose to follow-up with Chandra/ACIS one of these events identified either by HETE-2 or INTEGRAL. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- GRB ACIS-I NONE 20.00 GRB ACIS-I NONE 40.00 =================================================================================== Proposal Number: 04500935 Proposal Title: MODERATELY-SIZED, MIDDLE-AGED SUPERNOVA REMNANTS IN MAGELLANIC CLOUDS: AN UNEXPLORED POPULATION PI: KAZIMIERZ BORKOWSKI Subject Category: SN, SNR AND ISOLATED NS Abstract: We propose ACIS observations of three mature Magellanic Cloud supernova remnants, chosen to be most likely in the Sedov evolutionary phase and without strong interaction with inhomogeneous surrounding material. We wish to see whether our striking Cycle 2 finding, based on 3 similar LMC SNRs, of enhanced iron emission is true of a larger sample, and if so, to characterize the ejecta properties. Our previous study demonstrated that we will require high angular resolution to separate different emission components. For the faintest target we propose joint XMM-Newton observations. Such middle-aged remnants form an excellent sample in which to investigate electron heating, ejecta mixing and abundances, and possible cosmic-ray-modified shocks. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 00:51:06.70 -73:21:24.40 SNR 0049-73.6 ACIS-S NONE 50.00 05:34:15.00 -70:33:42.00 SNR DEM L238 ACIS-S NONE 60.00 =================================================================================== Proposal Number: 04500958 Proposal Title: THE DYNAMICS OF THE PULSAR WIND NEBULA IN G11.2-0.3 PI: MALLORY ROBERTS Subject Category: SN, SNR AND ISOLATED NS Abstract: We propose to make a series of observations of the pulsar wind nebula in the supernova remnant G11.23-0.3 to track the motion of individual dynamic spots seen with an AO-1 observation. This will constrain the termination shock radius and help us resolve the issue of the anomalously high magnetic field inferred from broad band spectral observations. More importantly, these observations will provide insight into the dynamical properties of a "typical" PWN/SNR system. The greater integration time of the combined set will also aid in resolving the true morphology of the PWN, which remains ambiguous. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 18:11:29.40 -19:25:25.00 G11.2-0.3 ACIS-S NONE 15.00 18:11:29.40 -19:25:25.00 G11.2-0.3 ACIS-S NONE 15.00 18:11:29.40 -19:25:25.00 G11.2-0.3 ACIS-S NONE 15.00 18:11:29.40 -19:25:25.00 G11.2-0.3 ACIS-S NONE 15.00 =================================================================================== Proposal Number: 04500813 Proposal Title: FIRST MEASUREMENT OF THE GRAVITATIONAL REDSHIFT AT THE SURFACE OF A NEUTRON STAR PI: GEORGE PAVLOV Subject Category: SN, SNR AND ISOLATED NS Abstract: Chandra observations of 1E1207.4-5209, the neutron star (NS) in the PKS 1209-51/52 SNR, allowed us to discover absorption features in the NS thermal spectrum. This discovery provides a unique opportunity to measure the NS mass and radius and constrain the equation of state. We interpret the features as lines of once-ionized helium formed in the NS atmosphere with a magnetic field of 150 Teragauss, which implies a radius of 9-14 km for a one-solar-mass NS. To measure accurate line energies and resolve potentially multiple lines blended in the low-resolution CCD spectrum, we propose a deep observation with ACIS/LETG. This observation will provide a high-resolution phase-resolved spectrum, required for precise measurement of the NS mass and radius. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:10:00.80 -52:26:25.10 1E 1207.4-5209 ACIS-S NONE 20.00 12:10:00.80 -52:26:25.10 1E 1207.4-5209 ACIS-S NONE 20.00 12:10:00.80 -52:26:25.10 1E 1207.4-5209 ACIS-S LETG 95.00 12:10:00.80 -52:26:25.10 1E 1207.4-5209 ACIS-S LETG 165.00 =================================================================================== Proposal Number: 04500015 Proposal Title: SURFACE TEMPERATURE OF ISOLATED NEUTRON STARS PI: STEPHEN MURRAY Subject Category: SN, SNR AND ISOLATED NS Abstract: Using the high resolution imaging of Chandra and the high time resolution, we can resolve the pulsed flux from the unpulsed flux from an isolated neutron star. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 19:52:58.20 +32:52:41.00 CTB 80 HRC-S NONE 65.00 =================================================================================== Proposal Number: 04500995 Proposal Title: LOCALIZATION OF "OPTICALLY DARK" GRBS WITH SLOW TOO OBSERVATIONS. PI: GORDON GARMIRE Subject Category: SN, SNR AND ISOLATED NS Abstract: We propose to carry out a time-critical program of Chandra GTO observations of HETE-discovered GRBs that are "optically dark" (i.e. the ~50% of GRBs which have no readily-identified optical counterpart). Chandra will provide <1" afterglow localizations, identifing 4 out of ~8, or ~50%, of the optically dark GRBs that HETE will detect in CY2003, the final year of the HETE primary mission. Localizations will be made public within 24 hours and will be promptly (<10 days) followed up by pre-arranged HST observations. We have requested 50 ksec of Cycle 4 GTO time for 2 Fast TOOs. In the current proposal, we request an additional 180 ksec total for 2 GTO Slow TOOs. Slow TOOs are sufficient for GRBs with very bright afterglows or possibly for the little studied class of "X-ray rich" GRBs. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- STOO#1 ACIS-I NONE 35.00 STOO #2 ACIS-I NONE 35.00 STOO #2 ACIS-I NONE 55.00 11:18:32.60 +15:02:59.90 STOO#1 ACIS-S NONE 55.00 =================================================================================== Proposal Number: 04500993 Proposal Title: LOCALIZATION OF "OPTICALLY-DARK" GRBS WITH FAST TOO OBSERVATIONS PI: GORDON GARMIRE Subject Category: SN, SNR AND ISOLATED NS Abstract: We propose to carry out a time critical program of GTO observations by Chandra of HETE-discovered GRBs that are ``optically dark'' (i.e. the ~50% of GRBs which have no readily-identified optical counterpart). Chandra can provide <1'' afterglow localizations for a substantial fraction of the optically dark GRBs that HETE will detect in CY2003. These localizations will be made public within 24 hours and will be promptly (<10 days) followed up by pre-arranged HST observations. We are requesting 50 ksec total of GTO time for 2 Fast TOOs, both of which have a first epoch observation made < 2 days of the GRB. Cycle 4 (CY2003) is the final year of the HETE primary mission, and the execution of this program is essential to the ultimate success of the HETE mission. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- FAST TOO # 1 ACIS-I NONE 10.00 FAST TOO # 1 ACIS-I NONE 15.00 FAST TOO # 2 ACIS-I NONE 10.00 FAST TOO # 2 ACIS-I NONE 15.00 =================================================================================== Proposal Number: 04500580 Proposal Title: MAKING THE MOST OF REMNANTS WITH CENTRAL OBJECT CANDIDATES PI: ERIC GOTTHELF Subject Category: SN, SNR AND ISOLATED NS Abstract: Chandra has been instrumental in the process of resolving the issue of which supernova remnants are host to central objects, discovering a number of pulsar wind nebulae which previous X-ray telescopes could not sufficiently resolve. In this continuing tradition, we request 123 ks of observing time to resolve plerionic emission from three supernova remnants from the MOST Catalogue which have hard X-ray counterparts. The census of such objects is small and poorly understood. Chandra's history of resolving arcsecond features from pulsar wind nebulae suggests that these observations will do much to further the study of the structure and evolution of plerions in supernova remnants. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 11:34:52.50 -60:53:45.00 G293.8+0.6 ACIS-S NONE 40.00 =================================================================================== Proposal Number: 04508134 Proposal Title: EXPLORING THE GRB-SUPERNOVA CONNECTION VIA SN2003L PI: SHRINIVAS KULKARNI Subject Category: SN, SNR AND ISOLATED NS Abstract: The type Ibc SN 1998bw provides a link between GRBs and supernovae. Like GRBs, it had relativistic ejecta (as inferred from the brilliant radio emission and early non-thermal X-ray emission) but with lower Lorentz factor. Ordinary SNe do not show bright radio emission at early times and theoretically appear unable to produce significant relativistic ejecta. Thus it is generally assumed that SN 1998bw harbored a central engine. For the past four years, we have been searching for other such engine-driven SNe and have recently reported bright emission from the type Ic SN2003L. With a radio luminosity that is currently 1.9E+28 erg/s/Hz (15% of SN1998bw at peak) and rising, this event is very similar to SN1998bw. A detection of non-thermal X-ray emission (synchrotron or inverse-Compton) would confirm the inference of relativistic ejecta and mark SN 2003L as another link between GRBs and SNe. A 30 ks observation will allow a rough determination of the spectrum. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 11:03:12.30 +11:04:38.00 SN2003L ACIS-S NONE 30.00 =================================================================================== Proposal Number: 04508140 Proposal Title: GRB030226: TESTING THE DUST DESTRUCTION HYPOTHESIS PI: KRISTIAN PEDERSEN Subject Category: SN, SNR AND ISOLATED NS Abstract: GRB030226 was discovered by HETE-2 and an optical transient identified 2.6h later. The redshift has now been measured to z=1.99 placing it in an ideal redshift window for combined X-ray and lyman alpha studies: It is close enough for X-ray absorption in the vicinity of the burst to be measurable in the CXO spectrum and far enough that lyman alpha can be reached from the ground. Combining the two measurements with optical/NIR observations we can accurately determine the amount of oxygen and iron (dominating the X-ray absorption), the amount of neutral hydrogen, and the dust content in the GRB environment. For this burst, we can thus tell if the low dust content, found in most burst environments, is due to either a) low metallicity and a universal dust-to-metals ratio, or b) solar metallicity, but a low dust-to-metal ratio. In case b) most of the metals are in the gas phase - indicating significant dust destruction. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 11:33:04.90 +25:53:55.00 GRB030226 ACIS-S NONE 40.00 *********************************************************************************** NORMAL GALAXIES -------------------------------------------------- =================================================================================== Proposal Number: 04600054 Proposal Title: X-RAY MONITORING OF SAGITTARIUS A* AND THE GALACTIC CENTER PI: GORDON GARMIRE Subject Category: NORMAL GALAXIES Abstract: We propose a 25-ks ACIS-I observation of Sagittarius A* (Sgr A*), the Galactic supermassive black hole candidate. These data will be used 1) to search for and characterize additional rapid X-ray flares from Sgr A*, 2) to characterize the long-term flux and spectral variability of Sgr A* quiescent emission on timescales of years, and 3) to monitor the fluxes and hardness ratios of the 200 discrete X-ray sources in the field of view in order to identify X-ray binaries in the direction of the Galactic center. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 17:45:40.00 -29:00:28.00 SGR A* ACIS-I NONE 25.00 =================================================================================== Proposal Number: 04600059 Proposal Title: X-RAY SOURCES IN THE NEARBY BARRED SPIRAL GALAXY NGC 1313 PI: GORDON GARMIRE Subject Category: NORMAL GALAXIES Abstract: The goal of this observation is to monitor the transient sources in the nearby barred spiral galaxy NGC 1313, to detect the nucleus of the galaxy, and to search for diffuse emission. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 03:17:55.00 -66:34:40.00 NGC 1313 ACIS-I NONE 15.00 03:17:55.00 -66:34:40.00 NGC 1313 ACIS-I NONE 15.00 =================================================================================== Proposal Number: 04600136 Proposal Title: LOW MASS X-RAY BINARIES AND GLOBULAR CLUSTERS IN VIRGO EARLY-TYPE GALAXIES PI: CRAIG SARAZIN Subject Category: NORMAL GALAXIES Abstract: We propose observations of NGC 4526, NGC 4473, and NGC 4762, three optically bright but X-ray faint early-type galaxies in the Virgo cluster. We will detect the Low Mass X-ray Binary (LMXB) population in these galaxies, and determine the luminosities, luminosity function, spectral properties, X-ray colors, and variability of these sources. These galaxies will be observed as part of the Hubble Space Telescope ACS Virgo Survey, which will determine the globular cluster (GC) populations of these galaxies. Previous observations have shown that a high fraction of LMXBs in E/S0 galaxies are located in GCs. We will compare the properties of the GC and non-GC LMXBs, with the aim to understand the origin of LMXBs, and to constrain the evolution of GCs and E/S0 galaxies. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:34:03.10 +07:41:59.30 NGC4526 ACIS-S NONE 44.00 =================================================================================== Proposal Number: 04600153 Proposal Title: EXPLORING THE COOLING FLOW RIDDLE: THE NATURE AND EFFECT OF NUCLEAR OUTBURSTS IN THE ELLIPTICAL GALAXY NGC4636 PI: CHRISTINE JONES Subject Category: NORMAL GALAXIES Abstract: The remarkable X-ray morphology of the elliptical galaxy NGC4636 is best explained as resulting from strong shocks driven by a powerful, (~6 X 10^{56} ergs) and recent (~3 million years ago) outburst from the nucleus. We propose a deep ACIS-S observation, that along with our deep VLA observation, will allow us to explore the effects of AGN outbursts on cooling. At a distance of 15 Mpc, NGC4636 offers an opportunity to study the feedback between cooling flows and AGN in detail. By mapping the strength of the shock fronts and tracing them to large radii, we will constrain the nature of the outburst. To test recent models in which AGN outbursts transport cool gas back to large radii, we will map the temperature and distribution of heavy elements on a few arcseconds scales in the galaxy core. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:42:50.00 +02:41:17.00 NGC4636 ACIS-I NONE 75.00 12:42:50.00 +02:41:17.00 NGC4636 ACIS-I NONE 75.00 =================================================================================== Proposal Number: 04600195 Proposal Title: IDENTIFYING LOW LUMINOSITY SOURCES IN THE NEAREST DWARF SPHERIOD GALAXIES PI: GAVIN RAMSAY Subject Category: NORMAL GALAXIES Abstract: Observations of M81 show that disk and bulge X-ray sources have different luminosity functions. Our `birth-death' model has explained the two luminosity functions successfully. It also predicts a population of primordial X-ray Binaries (XRBs). The best place to look for these XRBs is nearby dwarf spheriodal galaxies. We propose to observe two of the closest using ACIS-I. These observations will test the birth-death model and in addition detect bright cataclymsic variables (CVs). This is the first census of CVs in dwarf galaxies, and will provide a control model for studies of CV-formation in globular clusters. We will also constrain the HII content in a HI rich and a HI rich poor dwarf. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 18:55:03.30 -30:28:43.00 SAGITTARIUS DSPH ACIS-I NONE 30.00 =================================================================================== Proposal Number: 04600334 Proposal Title: X-RAY HALOES OF MASSIVE DISC GALAXIES: TESTING GALAXY FORMATION PI: KRISTIAN PEDERSEN Subject Category: NORMAL GALAXIES Abstract: The luminosity of X-ray haloes around disc galaxies is a crucial quantity for constraining theories for the assembly of disc galaxies. We have compiled a unique physically realistic sample of hydrodynamical simulations of disc galaxy formation and evolution, predicting present day X-ray halo luminosities and the spatial distribution of X-ray emission. Here we propose to test these novel models by obtaining deep Chandra pointings of two massive, nearby, edge-on disc galaxies. A detection of X-ray haloes will, for the first time, directly prove that disc formation is on-going today. Alternatively, a non-detection will require a major re-thinking of the currently accepted scenario for assembling disc galaxies. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 13:29:48.90 -17:57:59.40 NGC 5170 ACIS-I NONE 37.00 14:44:55.90 +01:57:19.00 NGC 5746 ACIS-S NONE 37.00 =================================================================================== Proposal Number: 04600352 Proposal Title: NGC 1705: TESTING THE PARADIGM OF THE WIND-DRIVEN EVOLUTION OF DWARF GALAXIES PI: TIMOTHY HECKMAN Subject Category: NORMAL GALAXIES Abstract: Dwarf galaxies are the galaxies most susceptible to energetic feedback from massive stars, and are the most plausible sources of the early heating and enrichment of the IGM by galactic winds. X-ray data are vital to study this process, as they are the most direct probe of the hot gas that contains the majority of the outflowing energy and metals. NGC 1705 is the prototypical example of a starburst-blown superbubble "blowing-out" of the ISM. We propose to obtain Chandra ACIS-S imaging spectroscopy of this galaxy. In conjunction with our existing FUSE and HST far-UV spectroscopy, these data will directly test the standard paradigm for the dynamical evolution of superbubbles and winds in dwarf galaxies and elucidate the physical origin and long-term fate of the hot X-ray-emitting gas. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 04:54:13.70 -53:21:40.80 NGC 1705 ACIS-S NONE 60.00 =================================================================================== Proposal Number: 04600376 Proposal Title: CHANDRA OBSERVATIONS OF THE EVOLVING CORE OF THE STARBURST GALAXY NGC 253 PI: KIMBERLY WEAVER Subject Category: NORMAL GALAXIES Abstract: A Chandra observation of the nearby (~2.5 Mpc) starburst galaxy NGC 253 has shown tantalizing evidence for an AGN-like photoionizing source at the center of a strong, but aging circumnuclear starburst. If true, this is the first clear snapshot of the complex interplay between starburst and AGN activity and could be key to our understanding of the evolutionary link between starbursts and AGN. The goal of this proposal is to obtain high quality, spatially-resolved spectra of the central ~20 x ~20 arcsecond region of NGC 253 to distinguish between collisionally ionized and photoionized plasmas and measure the physical properties of the central source. This science requires distinguishing X-ray sources that are only a few arcseconds apart, and hence cannot be done with XMM. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 00:47:33.30 -25:17:18.00 NGC 253 ACIS-S NONE 85.00 =================================================================================== Proposal Number: 04600406 Proposal Title: THE NATURE OF ULTRALUMINOUS X-RAY SOURCE POPULATION IN M51 PI: YUICHI TERASHIMA Subject Category: NORMAL GALAXIES Abstract: We propose to observe the spiral galaxy M51 (NGC 5194 and 5195) to investigate the nature of ultraluminous X-ray sources (ULXs) by using spectral variability. Our previous Chandra observations have shown that M51 contains 7 ULXs with luminosities greater than 10^39 ergs/s in 0.5-8 keV and that there is great variety of the properties of the ULXs (persistent and transient, hard and soft spectra, with and without emission lines). The new Chandra data will be used to measure the spectral shapes more precisely, to determine the spectral state based on the spectra and comparison with the precious observations, and to understand the physical nature of the variety of ULXs. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 13:29:56.00 +47:13:00.00 M51 ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04600483 Proposal Title: PROBING THE SPECTRAL VARIABILITY OF THE ULTRALUMINOUS X-RAY SOURCE NGC 5204 X-1 PI: TIMOTHY ROBERTS Subject Category: NORMAL GALAXIES Abstract: Recent results suggest that the ultraluminous X-ray sources (ULX) found in nearby galaxies may be related to the Galactic microquasars. One particular test of this hypothesis is to monitor the spectral variability of a ULX over a range timescales in order to search for microquasar-like behaviour. Here we propose a monitoring programme of the ULX NGC 5204 X-1, utilising a total of 100 ks of ACIS-S time, which will sample the spectral varability of this object on three distinct timescales (hours, days and weeks). The resulting data will define, essentially for the first time, the characteristics of the short-term variability of a ULX and thereby clarify whether it is correct to link this class of source to the Galactic microquasars. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 13:29:38.60 +58:25:06.00 NGC 5204 X-1 ACIS-S NONE 5.00 13:29:38.60 +58:25:06.00 NGC 5204 X-1 ACIS-S NONE 5.00 13:29:38.60 +58:25:06.00 NGC 5204 X-1 ACIS-S NONE 5.00 13:29:38.60 +58:25:06.00 NGC 5204 X-1 ACIS-S NONE 5.00 13:29:38.60 +58:25:06.00 NGC 5204 X-1 ACIS-S NONE 5.00 13:29:38.60 +58:25:06.00 NGC 5204 X-1 ACIS-S NONE 5.00 13:29:38.60 +58:25:06.00 NGC 5204 X-1 ACIS-S NONE 5.00 13:29:38.60 +58:25:06.00 NGC 5204 X-1 ACIS-S NONE 5.00 13:29:38.60 +58:25:06.00 NGC 5204 X-1 ACIS-S NONE 5.00 13:29:38.60 +58:25:06.00 NGC 5204 X-1 ACIS-S NONE 5.00 13:29:38.60 +58:25:06.00 NGC 5204 X-1 ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04600526 Proposal Title: LYMAN-ALPHA BLOBS AND THE FORMATION OF STRUCTURE AT HIGH REDSHIFT PI: GERARD WILLIGER Subject Category: NORMAL GALAXIES Abstract: Bright, extended Lyman-alpha nebulae (known as blobs) appear to be common in the densest environments at high redshift, and may reveal an important stage in galaxy evolution. Current Chandra data cannot distinguish between the possible excitation mechanisms, but suggest that we are seeing dense intracluster gas either falling into forming galaxies (cooling flows) or being expelled into the ICM, enriching it. Evidence also suggests that some blobs harbor AGN. We propose to observe four Lyman-alpha blobs in a single cluster at z=2.38. Our ACIS 100 ksec exposure will complete the Chandra observations of all currently known blobs. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 21:42:42.20 -44:23:24.00 CLUS 214228-442029 ACIS-S NONE 20.00 =================================================================================== Proposal Number: 04600538 Proposal Title: CHANDRA OBSERVATIONS OF RICH LMC STAR CLUSTERS PI: ANDREA PRESTWICH Subject Category: NORMAL GALAXIES Abstract: A large fraction of the violent star formation in starburst galaxies takes place in ``Super Star Clusters'' (SSC). These clusters are much richer than those seen in our galaxy, and may be the progenitors of globular clusters. We propose to observe 4 rich young clusters in the Large Magellanic Cloud. These clusters are almost as rich as those in starburst galaxies and are close enough to be resolved with Chandra. Our science goals are to characterize the X-ray emission from these clusters, search for optical and IR counterparts, constrain the onset of binary formation, and search for Intermediate Mass X-ray Objects which may be the progenitors of Millisecond Pulsars in globular clusters. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:04:14.00 -66:26:06.00 NGC 1818 ACIS-S NONE 25.00 05:06:16.00 -64:55:06.00 NGC 1831 ACIS-S NONE 25.00 =================================================================================== Proposal Number: 04600582 Proposal Title: THE INTERACTION OF HOT AND COLD GAS IN GALAXIES PI: JIMMY IRWIN Subject Category: NORMAL GALAXIES Abstract: Sa galaxies have roughly equal amounts of hot and cold gas, yet little is known about the interaction between the two phases. It is possible that the gas is thermally coupled, with cold gas cooling hot gas where the two phases interface. This would lead to a softening of the X-ray spectrum in the area of overlap. Alternatively, the phases could be thermally isolated, so that the cold gas in front of the hot gas absorbs soft X-rays behind it. We propose to observe three galaxies with unusual HI distributions to search for the interaction between the two phases. We will verify whether the hot gas fills the holes in the HI distribution. We will also investigate the lack of very luminous LMXBs in spiral bulges, and determine the luminosity function of the LMXBs that do exist in the bulges. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 22:57:13.30 -43:23:45.00 IC5267 ACIS-S NONE 60.00 =================================================================================== Proposal Number: 04600717 Proposal Title: RESOLVING X-RAY EMISSION FROM THE NUCLEUS OF M33 PI: GUILLAUME DUBUS Subject Category: NORMAL GALAXIES Abstract: We propose to verify with a short 5 ks HRC-S exposure that the powerful X-ray source coincident with the nucleus of M33 is unresolved at the highest spatial resolution. This will establish the source as the nearest example of the ultra-luminous X-ray sources Chandra has uncovered in other nearby galaxies. Resolved X-ray emission would provide new constraints on the environment of the nucleus. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 01:33:50.80 +30:39:36.80 M33 X-8 (NUCLEUS) HRC-S NONE 5.00 =================================================================================== Proposal Number: 04600794 Proposal Title: THE IMPENDING DESTRUCTION OF NGC1427A PI: MICHAEL GREGG Subject Category: NORMAL GALAXIES Abstract: The Fornax cluster member NGC 1427A provides a spectacular example of a hot ICM and cluster potential operating on a gas-rich irregular galaxy. On its first passage through the cluster core, NGC 1427A is being disrupted by the influence of the hot ICM, its own vigorous star formation, and the cluster tidal field. We propose joint Chandra/HST imaging of this X-ray source to explore the details of the impending galaxy destruction. Such events are common in the lives of clusters, and help build the intracluster components. NGC 1427A provides a snapshot of the progenitor ingredients about 1 Gyr prior to becoming true intracluster material, and a chance to study the forces which shred galaxies and build cluster gas and stellar components over a Hubble time. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 03:40:10.50 -35:37:38.00 NGC1427A ACIS-S NONE 65.00 =================================================================================== Proposal Number: 04600846 Proposal Title: GALACTIC CORONA ALONG THE HUBBLE SEQUENCE PI: Q. DANIEL WANG Subject Category: NORMAL GALAXIES Abstract: We propose Chandra ACIS observations of two nearby edge-on galaxies NGC4565 (Sb) and NGC4157 (Sc), which are located in regions of minimal Galactic foreground absorption. These observations, together with our existing data on the edge-on galaxies NGC4631 (Sd) and NGC3556 (Scd), will enable us to study the dependence of extraplanar hot gas on galaxy type, star formation rate, and environment. With a clean separation of diffuse X-ray emission from discrete sources, we will be able to measure the content, morphology, thermal status, and cooling rate of the hot gas and its role in shaping the galactic vertical structures. We will also test theories of galaxy formation, which predict substantial amounts of diffuse X-ray emission from hot gas cooling around massive galaxies. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:36:20.80 +25:59:16.00 NGC 4565 ACIS-S NONE 60.00 =================================================================================== Proposal Number: 04600854 Proposal Title: DIFFUSE X-RAY EMISSION FROM THE HOT ISM IN NEARBY SPIRAL GALAXIES PI: WILTON SANDERS Subject Category: NORMAL GALAXIES Abstract: We propose 100-ks observations of two nearby face-on galaxies with the ACIS S3 chip to measure the X-ray emission from their hot ISM. We have selected NGC 3631 and NGC 3938 because of their relatively high star formation rates. Our primary goal is to characterize the spatial distribution and spectral characteristics of the hot interstellar plasma in spiral galaxies similar to the Milky Way. The CXO angular resolution allows us to separate diffuse and point source emission, and the ACIS spectral resolution allows us to find the temperature and abundance parameters of the hot ISM. Other goals are to better understand the diffuse X-ray emission seen in some edge-on galaxy halos, to study the point sources in the galactic disk, and to study the cosmological diffuse background below 0.5 keV. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 11:21:02.80 +53:10:09.30 NGC 3631 ACIS-S NONE 100.00 =================================================================================== Proposal Number: 04600879 Proposal Title: DO ULIG'S DRIVE HOT GALACTIC WINDS? PI: CRYSTAL MARTIN Subject Category: NORMAL GALAXIES Abstract: Ultraluminous infrared galaxies (ULIGs) are signposts of the galaxy-galaxy mergers which underlie current models of galaxy assembly. These dusty environments hide the largest starbursts and are thought to be the birthplace of elliptical galaxies and quasars. The ULIG phase is brief, however, and we would like to understand how the obscuring dust and gas are removed. Half of the 40 ULIGs in our IR-flux-limited sample show evidence for cold, outflowing gas in deep Keck~II spectra. Only one of these is an approved Chandra target, so we request observations of the four ULIGs with the strongest galactic winds. We will detect (and spatially resolve) the thermal X-ray emission from the hot winds in these systems if they exist. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 10:59:18.25 +24:32:33.30 IRAS10565+2448 ACIS-S NONE 30.00 =================================================================================== Proposal Number: 04600850 Proposal Title: A CHANDRA AND HST STUDY OF IC 10: THE NEAREST STARBURST GALAXY TO THE MILKY WAY PI: FRANZ BAUER Subject Category: NORMAL GALAXIES Abstract: We propose joint Chandra and HST observations of IC 10, the nearest starburst galaxy to the Milky Way (0.8 Mpc). We detected a possible ultraluminous X-ray binary in IC 10 (hereafter X-1) with ROSAT, but its properties were very poorly constrained. Chandra+HST will provide a far better measure of X-1's luminosity, spectrum, environment, and position (Wolf-Rayet companion?). The Chandra image will also allow us to study most high-state X-ray binaries and the brightest young, evolving supernova remnants in IC 10, while the HST images will constrain the properties of the intermediate stellar mass population over much of the galaxy. This combination will thus offer a high-resolution glimpse into the early stages of stellar evolution, enabling us to test ideas about the starburt processes. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 00:20:29.00 +59:16:51.00 IC 10 ACIS-S NONE 30.00 =================================================================================== Proposal Number: 04600441 Proposal Title: AN X-RAY SEARCH FOR EXTRAGALACTIC SUPERNOVA REMNANTS IN THE SCULPTOR GROUP GALAXIES NGC 300 AND NGC 7793 PI: THOMAS PANNUTI Subject Category: NORMAL GALAXIES Abstract: We propose to conduct an X-ray search for supernova remnants (SNRs) in the Sculptor Group Galaxies NGC 300 and NGC 7793 using the ACIS-S3 chip on Chandra in imaging mode. These two galaxies are part of a high-resolution radio survey using the VLA to identify extragalactic SNRs. Chandra observations will detect X-ray SNRs in these galaxies and these sources will be added to the radio and optical samples, yielding a large number of equidistant SNRs in each galaxy. The luminosity, energy, diameter and other properties of these SNRs will be examined, and comparisons will be made between galactic environments, star formation, and supernova rates. Properties of other X-ray sources detected in these observations (X-ray binaries and background sources) will also be analyzed. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 23:57:48.60 -32:35:26.00 NGC 7793 ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04600767 Proposal Title: X-RAY TAILS IN EARLY TYPE GALAXIES PI: DONG-WOO KIM Subject Category: NORMAL GALAXIES Abstract: We propose ACIS observations (total 60 ks) of X-ray tails in NGC 4406 and NGC 7619. They provide a direct evidence of ram pressure stripping. With the superb Chandra resolution, we will be able to determine the degree of clumpiness and physical properties of the stripped, perturbed hot ISM to better understand the stripping process. The X-ray tails also provide a rare opportunity to directly investigate inhomogeneous cooling which may similarly take place near the center of the cooling flow. We will determine metal abundance and its variation and also test the hypothesis of extreme metallicity variation. Because the the X-ray tail is essentially free from LMXBs and AGN/radio-jets, the interpretation of X-ray data and hence abundance measurement is less complex than in the cooling core. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 23:20:10.00 +08:10:00.00 NGC 7619 ACIS-S NONE 40.00 =================================================================================== Proposal Number: 04600088 Proposal Title: IR EXCESS GALAXIES: YOUNG STARBURSTS OR BURIED AGN? PI: GORDON GARMIRE Subject Category: NORMAL GALAXIES Abstract: We porpose to observe 7 galaxies with Ir excess relative to radio to search for faint AGN activity. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 02:35:27.40 -09:21:20.00 NGC 988 ACIS-S NONE 5.00 =================================================================================== Proposal Number: 04600089 Proposal Title: ALTERNATE- IR EXCESS GALAXIES: YOUNG STARBURSTS OR BURIED AGN? PI: GORDON GARMIRE Subject Category: NORMAL GALAXIES Abstract: We porpose to observe 7 galaxies with Ir excess relative to radio to search for faint AGN activity. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 04:35:48.30 +02:15:29.00 UGC 3097 ACIS-S NONE 11.00 *********************************************************************************** ACTIVE GALAXIES AND QUASARS -------------------------------------------------- =================================================================================== Proposal Number: 04700004 Proposal Title: OBSERVATIONS OF THE OPTICAL JET OF MH 2136-428 PI: PAOLO PADOVANI Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We will image MH 2136-428 with HST/ACS in three bands: F475W, F625W, F850LP, i.e., SDSS g, r, z. The Chandra exposure time has been determined based on the results of Pesce et al. (2001) on 3C 371. The optical jet of this source has a surface brightness roughly 1.5 magnitudes fainter than that of our source, but the S/N ratio of the Chandra observations was far from optimal. Assuming that the X-ray-to-optical ratio of the jet in MH 2136-428 is similar to that of 3C 371, 10ks should allow us to constrain the presence of an X-ray jet without reasonable doubt. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 21:39:24.10 -42:35:21.30 MH 2136-428 ACIS-S NONE 10.00 =================================================================================== Proposal Number: 04700035 Proposal Title: SOLVING THE ENIGMAS OF THE NEARBY SEYFERT/STARBURST GALAXY NCG1365 WITH CHANDRA ACIS-S PI: PETER PREDEHL Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: NGC 1365 is a barred spiral galaxy showing both, AGN and starburst activity. A 15 ksec Chandra ACIS-S observation will allow to disentangle the starburst and AGN contibution. It will also give a precise position of the X-ray luminous off-nuclear source N1365-X1, and allow to study the nature of this source. In the proposal, we show that the observation will allow some key test of the unified model of AGN. Several other interesting science topics will also be addressed. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 03:33:36.40 -36:08:25.00 NGC 1365 ACIS-S NONE 15.00 =================================================================================== Proposal Number: 04700036 Proposal Title: THE NATURE OF THE X-RAY SOURCE 1E0104+3153 PI: PETER PREDEHL Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose a 5 ksec Chandra ACIS-S observation, to solve the longly-debated puzzle of the nature of the X-ray source 1E0104+3153. The source might be identified with a high-redshift quasar, or with the intra-cluster-medium of an intermediate-distant group of galaxies. One key test is to check for source extent which is only possible with the high spatial resolution of Chandra. We show that, whatever the outcome of the observation, it will allow interesting follow-up science. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 01:06:58.70 +32:09:18.00 1E0104+3153 ACIS-S NONE 5.00 =================================================================================== Proposal Number: 04700037 Proposal Title: MONITORING THE X-RAY TRANSIENT AGN RX J2217.9-5941 PI: PETER PREDEHL Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: When observed in X-rays AGN show a wide range of variabilities. While variabilities by factors of 2-3 are quite common, the most extreme form of variability is X-ray transience. In this case the source is bright only at one time and becomes fainter by factors of several 100s of even vanishes from the X-ray sky. X-ray transience can be explained by either a dramatic chance of the accretion disk properties or by a rapid chance of then accretion rate, either by disk instabilities of by tidal disruption of a star by the central black hole. I propose to monitor the X-ray transient candidate, RX J2217.9--5941 for short two Chandra observations. The sources was bright in the ROSAT All-Sky Survey but appeared to be very faint when observed years later. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 22:17:56.60 -59:41:30.00 RX J2217.9-5941 ACIS-S NONE 5.00 22:17:56.60 -59:41:30.00 RX J2217.9-5941 ACIS-S NONE 5.00 =================================================================================== Proposal Number: 04700038 Proposal Title: PRECISE DETERMINATION OF THE BRIGHT END OF THE LOCAL GALAXY X-RAY LUMINOSITY FUNCTION PI: PETER PREDEHL Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: The X-ray luminosity function (XLF) of local galaxies and of local AGN was derived from the ROSAT Bright Survey (RBS). Both XLFs are relatively uncertain in the range of 41.0 4 PI: GORDON GARMIRE Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose Chandra ACIS-S snapshot observations of a sample of luminous z > 4 quasars with radio detections in the FIRST survey. Radio-detected quasars are known to be among the X-ray brightest quasars at low redshift, and thus we also expect them to be among the X-ray brightest quasars at z > 4. Our targets have a range of radio loudness, and some of them should be among the best z > 4 quasars for future detailed study in X-rays. Observations of these targets will help to bridge the enormous gap in radio loudness between the radio-quiet z > 4 objects we are studying at present and the extremely radio-loud blazars at z > 4. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 07:25:18.30 +37:05:17.90 FIRST 0725+3705 ACIS-S NONE 5.00 07:47:11.20 +27:39:03.60 FIRST 0747+2739 ACIS-S NONE 5.00 08:39:46.20 +51:12:02.80 SDSS083946.22+511202 ACIS-S NONE 5.00 09:18:24.40 +06:36:53.40 J 091824+063653 ACIS-S NONE 5.00 13:09:40.60 +57:33:09.10 FIRST 1309+5733 ACIS-S NONE 5.00 13:25:12.50 +11:23:29.80 J 132512+112329 ACIS-S NONE 5.00 14:23:08.20 +22:41:57.50 FIRST 1423+2241 ACIS-S NONE 5.00 =================================================================================== Proposal Number: 04700100 Proposal Title: THE LARGE-SCALE GALACTIC OUTFLOW IN THE SEYFERT GALAXY NGC 2992 PI: EDWARD COLBERT Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: Only now, with Chandra, can we finally image the hot gas in Large-Scale (kpc) Outflows (LSOs) in Seyferts and (a) study its X-ray morphology, (b) obtain reliable temperatures and luminosities, and (c) infer the density, mass, pressure and cooling time. These quantities can be compared with pressures, kinetic energy rates, and masses from models based on optical kinematic and radio data. The LSO in NGC 2992 is quite different from those that have already been observed with Chandra and have linear nuclear radio structures. It has a diffuse sub-kpc radio structure (but NO starburst) and a wide-angled outflow. We shall use the Chandra X-ray data with our optical Fabry-Perot data, radio images, and published ionization results to diagnose the LSO in NGC2992. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 09:45:42.00 -14:19:35.00 NGC2992 ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04700170 Proposal Title: A CHANDRA AND XMM-NEWTON STUDY OF THE MOST DISTANT QUASARS: X-RAYING THE FIRST MASSIVE BLACK HOLES PI: WILLIAM BRANDT Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose to continue our systematic Chandra and XMM-Newton study of the most distant known quasars, with our ultimate goals being to learn about the central power sources and environments of the first quasars to form in the Universe. We request exploratory observations of 13 quasars; most have z > 4.8. We will define their broad-band spectral energy distributions and reliably determine the X-ray luminosity function of optically selected quasars at the highest redshifts. Count stacking will give basic spectral constraints in the 2-50 keV rest-frame band, and these observations will provide the key flux information needed for effective planning of future X-ray spectroscopy. We will also measure the X-ray properties of a remarkable group of high-redshift quasars lacking emission lines. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 00:11:15.20 +14:46:01.80 SDSS J001115+144601 ACIS-S NONE 3.50 13:02:16.10 +00:30:32.10 SDSS J130216+003032 ACIS-S NONE 10.80 14:33:52.20 +02:27:14.00 SDSS J143352+022714 ACIS-S NONE 3.50 14:42:31.70 +01:10:55.30 SDSS J144231+011055 ACIS-S NONE 11.40 16:53:54.60 +40:54:02.20 SDSS J165354+405402 ACIS-S NONE 3.50 22:25:09.20 -00:14:06.90 SDSS J222509-001406 ACIS-S NONE 3.50 22:28:45.20 -07:57:55.30 SDSS J222845-075755 ACIS-S NONE 7.00 =================================================================================== Proposal Number: 04700181 Proposal Title: METALLICITY DETERMINATION IN A NARROW LINE SEYFERT 1 GALAXY USING JOINT CHANDRA \& HST OBSERVATIONS PI: SMITA MATHUR Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: By virtue of their extreme properties, NLS1s have given us crucial leverage on the key physical parameters underlying the AGN phenomenon (m_dot and M_{BH}). There is also suggestive evidence of super-solar abundance in some NLS1s, possibly as a result of rapid nuclear star formation in the early/rejuvenated phase of galaxy evolution. The goal of this proposal is to measure accurately the metallicity in a NLS1 with high resolution X-ray and UV spectroscopy. Observations of elements with multiple ionization states in the X-ray band, and abundance sensitive lithium-like nitrogen (NV) in the UV allow accurate determination of ionization parameter, and thus metallicity. This is not only important for understanding the NLS1 phenomenon, but also for investigating evolutionary aspects of AGNs. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 02:30:05.50 -08:59:52.40 MRK 1044 ACIS-S HETG 100.00 =================================================================================== Proposal Number: 04700217 Proposal Title: A SEARCH FOR PROPER MOTIONS, INTENSITY VARIATIONS, AND SPECTRAL CHANGES IN THE X-RAY KNOTS OF THE CENTAURUS A JET PI: RALPH KRAFT Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: Chandra observations of the Cen A jet reveal a complex X-ray morphology of bright knots and diffuse emission. We concluded that this X-ray emission is due to synchrotron radiation from a population of ultrarelativistic electrons. We propose to reobserve the Cen A X-ray jet to search for intensity variations, spectral changes, and proper motions in the knots in order to test the synchrotron emission hypothesis. This followup observation will directly test this conclusion since spectral and intensity variations are predicted to be detectable on the time scale of one year due to the short particle lifetimes for synchrotron emission. We will search for proper motion of the X-ray knots to independently assess the importance of relativistic effects. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 13:25:28.70 -43:00:59.70 CENTAURUS A ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04700238 Proposal Title: STUDY OF A QUASAR AND X-RAY JET AT REDSHIFT Z=5.99 PI: DANIEL SCHWARTZ Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: This proposal will follow up one of the most exciting recent discoveries by Chandra: An observation of a probable X-ray jet (Schwartz, 2002b) associated with the second most distant quasar known, SDSS1306+0356. If powerful quasar jets emit X-rays via inverse Compton on the Cosmic Microwave Background, they will be seen with constant surface brightness to as large a redshift at which they exist. Study of the most distant X-ray jet will help confirm and characterize this hypothesis, and will bear on the puzzle of how such a powerful quasar can form so early in the universe. I will release the fits file of data for the quasar core to the community immediately. (URL: http://asc.harvard.edu/acis/dschwartz.html) Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 13:06:09.30 +03:56:43.50 SDSS 1306+0356 JET ACIS-S NONE 120.00 =================================================================================== Proposal Number: 04700246 Proposal Title: PROBING INTO THE ENEGETICS IN LOBES OF RADIO GALAXIES. PI: NAOKI Isobe Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: Using the inverse Compton (IC) technique, we have found some evidence that the particle energy tends to dominate the magnetic energy and that the magnetic field tends to be lower than 3 $\mu$G in these lobes. We propose here Chandra ACIS-S observations of two lobe-dominant, small, and distant radio galaxies, 3C 438 and 3C 62, both of which can potentially have sufficiently stronger magnetic fields than our previous targets under equipartition assumption. Our objective is to measure energy densities of particles and magnetic fields in their lobes, by detecting the IC X-rays. We basically expect that the particle dominance is achieved. However, we cannot rule out a possibility that an equipartition is realized, since the strong magnetic field will enhance the SR cooling. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 21:55:52.30 +38:00:29.60 3C 438 ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04700249 Proposal Title: BULK DECELERATION AND PARTICLE ACCELERATION IN THE INNER JETS OF 3C296 PI: MARTIN HARDCASTLE Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: The twin jets in low-power radio galaxies decelerate from relativistic to sub-relativistic speeds on scales of 1-10 kpc from the active nucleus, probably due to entrainment of external matter. All entrainment models require a steep pressure gradient in the external hot gas. We have already shown that this model can be applied to the radio galaxy 3C31; we detected the predicted X-ray emitting gas and measured the pressure gradient, allowing a measurement of jet energy flux. The same observation showed that X-ray synchrotron emission from the jet comes from the region of bulk jet deceleration. We now wish to apply this technique to a second radio galaxy, 3C296, for which we have again predicted the gas properties near the jet, and where two-sided jet emission is likely to be detectable. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 14:16:52.90 +10:48:26.60 3C296 ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04700279 Proposal Title: X-RAY STRUCTURE OF THE ``BLOW-OUT'' GAS IN TWO COLLISIONAL RING GALAXIES PI: JOHN WALLIN Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: Starburst driven outflows have a great impact on the chemical evolution of the universe by enriching the IGM with metal rich gas. Since this high temperature gas escapes from star forming regions, these outflows provide a sink for both mass and energy in starbursts and may help regulate the star formation rate. We plan to use Chandra to study two collisional ring galaxies that have strong evidence of massive starburst driven outflows. By comparing these galaxies to each other and to the already observed Cartwheel galaxy, we will determine the composition, temperature, and morphology of the starburst driven outflow, as well as the primary emission mechanisms within these systems. The high spatial resolution and sensitivity of Chandra make it ideally suited for this study. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 06:43:00.00 -74:15:00.00 AM0644-741 SW RING ACIS-S NONE 40.00 =================================================================================== Proposal Number: 04700285 Proposal Title: STRUCTURES AND SPECTRA OF EXTENDED EMISSION REGIONS IN THREE BL LAC OBJECTS PI: MARK BIRKINSHAW Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: Our Chandra study of BL Lac PKS 0521-365 found X-rays from its core, jet, radio hot-spot, and surrounding atmosphere. The components' structures and spectra are consistent with our results for radio galaxies, after allowing for projection effects and a relativistic jet. This agrees with schemes that unify BL Lac objects with radio galaxies. However, PKS 0521-365 is a radio-selected object with unusual properties and may not be representative of the BL Lac population, so we must repeat this work on other sources. We have selected three representative weak-core BL Lacs for which we request 15 ks ACIS-S observations. The resulting data will be as detailed as for PKS 0521-365, and so will test unification models for BL Lacs and radio galaxies and allow detailed study of the source physics. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 04:25:50.70 -08:33:43.00 EXO 0423.4-0840 ACIS-S NONE 15.00 15:17:41.80 -24:22:19.00 AP LIBRAE ACIS-S NONE 15.00 23:19:05.80 -42:06:48.00 PKS 2316-423 ACIS-S NONE 15.00 =================================================================================== Proposal Number: 04700288 Proposal Title: THE PHYSICS OF RELATIVISTIC JETS: DEEP CHANDRA AND HST OBSERVATIONS OF TWO NEWLY DISCOVERED JETS PI: RITA SAMBRUNA Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose deep observations of two X-ray-bright jets newly discovered in our AO2 survey, both with optical counterparts in our HST images. The targets were selected because of their interesting physical properties. Our goals are to obtain high-quality X-ray and optical images to study the jet morphologies and determine the X-ray and optical spectra. Both the morphologies and spectra will test the origin of X-rays, whether they are from inverse Compton on microwave background photons vs. direct synchrotron emission, allowing us to determine the jet physical parameters (Lorentz factors, particle distributions, and beaming) at different locations in the jet. This has important implications on the modes of energy transport and dissipation in relativistic jets. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 11:39:10.70 -13:50:44.00 1136-135 ACIS-S NONE 81.00 11:53:24.40 +49:31:09.00 1150+495 ACIS-S NONE 70.00 =================================================================================== Proposal Number: 04700315 Proposal Title: X-RAY VARIABILITY IN THE JET AND CORE OF M87 PI: DANIEL HARRIS Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: M87 is the nearest galaxy with a bright radio / optical / X-ray jet, and affords an unparalleled opportunity to study extragalactic jet phenomena at high resolution. We propose the second phase of a long-term variability study of the core and jet of M87 with 8 ACIS observations at intervals of 1.3 months. We will correlate X-ray brightness variations in both time and place with morphological features (shocks within knots) and structural changes (emergence of new superluminal features) seen in our high resolution radio / optical studies of the 20" jet. Our ultimate goal is to learn what processes and phyical conditions are responsible for producing X-rays in AGN jets. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:30:49.00 +12:23:30.00 M87 ACIS-S NONE 5.00 12:30:49.00 +12:23:30.00 M87 ACIS-S NONE 5.00 12:30:49.00 +12:23:30.00 M87 ACIS-S NONE 5.00 12:30:49.00 +12:23:30.00 M87 ACIS-S NONE 5.00 12:30:49.00 +12:23:30.00 M87 ACIS-S NONE 5.00 12:30:49.00 +12:23:30.00 M87 ACIS-S NONE 5.00 12:30:49.00 +12:23:30.00 M87 ACIS-S NONE 5.00 12:30:49.00 +12:23:30.00 M87 ACIS-S NONE 5.00 =================================================================================== Proposal Number: 04700345 Proposal Title: THE X-RAY JETS, CORES, AND GAS IN FRI RADIO GALAXIES PI: DIANA WORRALL Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose ACIS imaging and spectroscopy of B2 bright-sample FRI radio galaxies. Our program has already revealed rich X-ray structure in sample members, including galaxy-scale gas, compact X-ray cores, and the first detections of kpc-scale X-ray jets in FRIs more distant than Cen A and M 87. Evidence is mounting that the jet X-ray emission is synchrotron and the jets highly shocked. The measurements will further our study of the validity of the unification of B2 radio galaxies and BL Lac objects, allowing us to test physical models for the jet emission, compare X-ray core and jet properties with other indicators of jet speed and orientation, and relate results to the X-ray gas, which must play an important role in the jet dynamics. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 14:24:40.50 +26:37:30.50 B2 1422+26B ACIS-S NONE 10.00 15:56:03.90 +24:26:52.90 B2 1553+24 ACIS-S NONE 20.00 16:17:40.50 +35:00:14.70 B2 1615+35 ACIS-S NONE 20.00 =================================================================================== Proposal Number: 04700368 Proposal Title: DO QSO EXTENDED EMISSION REGIONS RESULT FROM COOLING FLOWS? PI: ALAN STOCKTON Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: Many low-redshift QSOs show strong optical emission extending over ranges of several tens of kiloparsecs. In general, the ionized gas shows no evident correlation with either the host galaxy morphology or the radio structure. While it can be shown that the gas is photoionized by the QSO, the origin of this gas is still quite uncertain. Crawford, Fabian, and colleagues have argued strongly that the gas originates in cooling flows, but a close study of one emission-line region indicates gas pressures inconsistent with such an origin; however, this conclusion is still somewhat model dependent. We propose here the first direct test of the presence of cooling flows in groups associated with 5 QSOs with luminous extended emission regions. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 11:04:13.70 +76:58:58.10 3C 249.1 FIELD ACIS-I NONE 25.00 12:25:39.50 +24:58:36.50 4C 25.40 FIELD ACIS-I NONE 16.00 15:14:43.10 +36:50:50.50 4C 37.43 FIELD ACIS-I NONE 42.00 =================================================================================== Proposal Number: 04700379 Proposal Title: AN X-RAY MICROLENSING TEST OF THE AU-SCALE CENTRAL STRUCTURE OF THE QUADRUPLE QUASAR 2237+0305 PI: SHIN MINESHIGE Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose Chandra observation of the gravitationally lensed quasar Q2237+0305 (Einstein Cross) during a microlensing event. We will monitor the four images of the QSO from the ground regularly to ascertain the onset of a microlensing event. As the microlensing event occurs, we will measure the variations of X-ray intensity and spectra with Chandra and compare with those taken after the event. Since only a small region of the QSO accretion disk is strongly magnified during a microlensing event, we will be able to limit the size of X-ray emitting regions of the QSO and thus the mass which is contained on scales of several AUs. If observed simultaneously with ground-based telescopes and with HST, furthermore, we will also be able to probe multi-wavelength emission properties of QSOs. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 22:40:30.30 +03:21:31.00 Q2237+0305 ACIS-S NONE 20.00 22:40:30.30 +03:21:31.00 Q2237+0305 ACIS-S NONE 20.00 22:40:30.30 +03:21:31.00 Q2237+0305 ACIS-S NONE 20.00 22:40:30.30 +03:21:31.00 Q2237+0305 ACIS-S NONE 20.00 =================================================================================== Proposal Number: 04700410 Proposal Title: AN X-RAY SURVEY OF RADIO-SELECTED LOW-LUMINOSITY AGNS PI: YUICHI TERASHIMA Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose to study a complete sample of radio-selected low-luminosity AGNs (LLAGNs). The sample is selected from our high-resolution radio observations of 96 low-luminosity AGNs. The data will be used to (1) measure the spectral shape of LLAGNs with luminsoities LX~10^40 ergs s^-1, (2) study their radio loudness, and (3) investigate the nature of accretion disks and jets in LLAGNs. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 11:32:34.90 +53:04:04.50 NGC 3718 ACIS-S NONE 5.00 12:09:29.80 +43:41:06.70 NGC 4138 ACIS-S NONE 5.00 12:12:17.20 +13:12:18.70 NGC 4168 ACIS-S NONE 5.00 12:15:54.30 +13:08:58.10 NGC 4216 ACIS-S NONE 5.00 12:28:29.50 +17:05:06.00 NGC 4450 ACIS-S NONE 5.00 12:52:55.80 +11:13:46.60 NGC 4762 ACIS-S NONE 5.00 12:53:29.20 +02:10:06.20 NGC 4772 ACIS-S NONE 5.00 =================================================================================== Proposal Number: 04700418 Proposal Title: SEARCHING FOR HIGHLY IONIZED WARM ABSORBERS IN HIGH LUMINOSITY AGN: 4C 74.26 PI: SHAI KASPI Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose 200ks HETGS observation of the radio-loud quasar 4C 74.26 to search for the presence of highly ionized warm absorbing gas (WA). WAs are apparently rare in high luminosity sources. Here we propose that, in fact, they are very common but so far escaped detection by the low resolution ASCA and XMM detectors since the spectrum of E>1.2 keV WA gas contains mostly narrow absorption lines and no strong bound-free edges. Chandra/HETG is ideal for searching and measuring such lines and 4C 74.26 is a very suitable high-L AGN for testing this hypothesis. Positive line detection will allow measurements of the physical properties and motion of the WA gas. We will also measure the iron-K line and search for an X-ray jet along the known radio jet. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 20:42:37.20 +75:08:02.50 4C 74.26 ACIS-S HETG 70.00 =================================================================================== Proposal Number: 04700422 Proposal Title: THE NATURE OF THE ``COMPOSITE'' SEYFERT/STAR-FORMING GALAXIES PI: ANNA WOLTER Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: An enigmatic class of IR and X-ray luminous sources, named ``Composite'' starburst/Seyfert galaxies, (Moran et al. 1996) have optical spectra dominated by the features of HII galaxies (plus, in some cases, weak Seyfert signatures) but X-ray properties typical of Seyferts. The true nature of this class of objects is still unknown. A detailed Chandra investigation of the class is necessary. We propose to study the starburst component in NGC 7679, a very bright Composite discovered by Della Ceca et al. (2001), for which we already have studied the nuclear X-ray properties with ASCA and BeppoSAX. Four additional fainter galaxies from the Moran sample will be investigated to determine detailed X-ray properties, including the presence of a nucleus, of high absorption and of starburst features. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 01:10:14.10 +50:10:32.10 IRAS01072+4954 ACIS-I NONE 25.00 01:34:25.20 -15:49:07.40 IRAS01319-1604 ACIS-I NONE 25.00 04:41:48.30 -01:18:10.60 IRAS04392-0123 ACIS-I NONE 25.00 20:07:50.70 +59:38:11.00 IRAS20069+5929 ACIS-I NONE 25.00 =================================================================================== Proposal Number: 04700427 Proposal Title: MAGNETIC FIELD STRENGTHS IN THE LOBES OF FRII RADIO SOURCES PI: MARTIN HARDCASTLE Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: There is good evidence that the magnetic field strengths (B) in the hotspots of powerful double radio sources are close to their canonical minimum-energy values, but the situation is much less clear in their lobes. B there controls the lobe pressure, and so is key to an understanding of radio source dynamics. The best way to measure B in lobes is to observe inverse-Compton (IC) scattering of microwave background photons up to X-ray energies. We have recently found good evidence for this process in deep Chandra observations of radio sources. We now propose to observe three more objects whose IC emission should be detected at a high level of confidence. This will give a sample large and unbiased enough to let us make statements about the field strengths in the population as a whole. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 04:13:40.40 +11:12:15.30 3C109 ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04700486 Proposal Title: QUIESCENT SUPERMASSIVE BLACK HOLES PI: GIUSEPPINA FABBIANO Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose to observe 5 elliptical galaxies with ACIS-S to study the lowest levels of nuclear activity. These galaxies all have measurements of nuclear black hole masses (ranging from 5E7 to 6E8 M-sun) but no evidence of radio or optical nuclear activity. The observations will be sensitive to nuclear emission down to 2E38 erg/s, which is of order 1E-8 L-Edd in our targets, and estimate the Bondi luminosity down to of order 1E-4 L-Edd. These results will provide tight constraints on the feeding and energy balance of supermassive black holes. We will combine these results with archival Chandra data to check the Ho and Peng radio-loudness/activity relation. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 02:08:21.00 +10:59:41.00 NGC 821 ACIS-S NONE 15.00 02:08:21.00 +10:59:41.00 NGC 821 ACIS-S NONE 30.00 12:30:31.80 +12:29:26.00 NGC 4486B ACIS-S NONE 40.00 12:36:26.80 +11:26:21.00 NGC 4564 ACIS-S NONE 20.00 15:06:00.80 +01:38:02.00 NGC 5845 ACIS-S NONE 30.00 =================================================================================== Proposal Number: 04700491 Proposal Title: A CHANDRA SURVEY OF INFRARED-BRIGHT LINER GALAXIES PI: SHOBITA SATYAPAL Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: Most previous X-ray studies of LINER galaxies have neglected IR-bright LINERs. The goal of this proposal is to conduct an X-ray "snapshot" survey using the Chandra ACIS images of a select sample of nearby IR-bright galaxies. This sample complements and extends previous X-ray surveys of optically-selected LINERs. We will: 1) unveil compact hard X-ray nuclear sources and find their luminosities, 2) compare and contrast the detection rate and luminosities of nuclear X-ray sources in this study and previous optically-selected studies, and 3) determine if IR spectroscopic detections of high excitation lines from ISO correlate with nuclear X-ray point source detections. This program will have a crucial impact on future SIRTF surveys. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 01:43:01.70 +13:38:34.00 NGC 660 ACIS-S NONE 5.00 02:41:45.40 +00:26:35.00 NGC1055 ACIS-S NONE 5.00 10:06:33.60 -29:56:09.00 NGC3125 ACIS-S NONE 5.00 11:58:31.30 +43:56:49.00 NGC4013 ACIS-S NONE 5.00 12:06:23.10 +52:42:39.00 NGC4102 ACIS-S NONE 5.00 12:23:57.90 +16:41:37.00 NGC4350 ACIS-S NONE 5.00 12:26:56.40 +15:02:50.00 NGC4419 ACIS-S NONE 5.00 12:34:08.50 +02:39:10.00 NGC4527 ACIS-S NONE 5.00 12:45:08.70 -00:27:41.00 NGC4666 ACIS-S NONE 5.00 12:49:57.80 +05:18:39.00 NGC4713 ACIS-S NONE 5.00 12:50:07.10 +72:52:30.00 NGC4750 ACIS-S NONE 5.00 13:10:56.20 +37:03:33.00 NGC5005 ACIS-S NONE 5.00 14:32:05.80 +57:55:17.00 NGC5678 ACIS-S NONE 5.00 15:34:32.40 +15:11:39.00 NGC5953 ACIS-S NONE 5.00 16:16:37.50 +68:12:09.00 IC 1218 ACIS-S NONE 5.00 23:02:00.90 +15:57:53.00 NGC7465 ACIS-S NONE 5.00 =================================================================================== Proposal Number: 04700527 Proposal Title: CHANDRA OBSERVATION OF HS 1603+3820 - A BRIGHT, HIGH REDSHIFT QUASAR WITH VERY RICH ASSOCIATED ABSORPTION PI: ADAM DOBRZYCKI Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose to observe with Chandra/ACIS-S3 a bright (B=15.9), radio-quiet z=2.51 quasar HS 1630+3820. This object has arguably the most spectacular heavy element absorption spectrum of all known quasars. A tight cluster of associated absorbers shows a multitude of components from various species in various ionization stages making it an ideal candidate for the warm absorber studies. Combination of information provided by X-ray and optical observations gives a powerful tool to study the physical conditions in quasar circumnuclear material. This will be one of only a few high-z radio quiet objects observed in X-rays and the presence or absence of absorption will carry significant weight in the debate whether absorption properties of radio-loud and radio-quiet quasars are different. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 16:04:55.40 +38:12:01.40 HS 1603+3820 ACIS-S NONE 10.00 =================================================================================== Proposal Number: 04700532 Proposal Title: CONNECTING THE X-RAY AND UV IONIZED ABSORBERS IN MRK 279 PI: JELLE KAASTRA Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose a deep X-ray/UV spectroscopy campaign on the bright Seyfert 1 galaxy Mrk 279, using Chandra LETGS, HST/STIS, and FUSE. Our main scientific goal is to study the AGN outflow seen as an ionized absorber in this galaxy, focusing on the crucial connection between the X-ray and UV manifestations of the outflows. We will map the ionization and velocity structure, measure the elemental abundances and then determine the mass and kinetic luminosity flux of the outflow - all stepping stones for studying the importance of outflows in the evolution of AGN and their host galaxies. In addition we will use the LETGS data to determine the existence of relativistic CNO emission lines in the spectrum. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 13:53:03.50 +69:18:29.20 MRK 279 HRC-S LETG 30.00 13:53:03.50 +69:18:29.20 MRK 279 HRC-S LETG 165.00 13:53:03.50 +69:18:29.20 MRK 279 HRC-S LETG 165.00 =================================================================================== Proposal Number: 04700543 Proposal Title: PROBING THE NUCLEAR GEOMETRY OF THE MOST LUMINOUS GALAXY IN THE LOCAL UNIVERSE WITH CHANDRA PI: SARAH GALLAGHER Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: Markarian 231, an ultraluminous infrared galaxy, hosts both a luminous broad absorption line QSO and an active starburst. During our previous ACIS-S3 observation, Mrk 231 demonstrated significant nuclear variability, indicating that Chandra had probed within light hours of the central black hole. We propose an additional three 40 ks observations of Mrk 231 strategically spaced to test our hypothesis that multiple scattered and absorbed lines of sight combine to account for the nuclear X-ray spectrum. In addition, these observations will allow us to investigate further the spatial and spectral structure of the extended galaxy. This remarkable, nearby galaxy offers us the opportunity to examine in detail phenomena more likely typical of the early universe. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:56:14.20 +56:52:25.20 MARKARIAN 231 ACIS-S NONE 40.00 12:56:14.20 +56:52:25.20 MARKARIAN 231 ACIS-S NONE 40.00 12:56:14.20 +56:52:25.20 MARKARIAN 231 ACIS-S NONE 40.00 =================================================================================== Proposal Number: 04700553 Proposal Title: WHY DO WE SEE BROAD LINES IN X-RAY ABSORBED AGN? PI: BELINDA WILKES Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: The Chandra X-ray spectra of red, broad-line AGN are hard. This, combined with their unusually high optical polarization, suggests substantial obscuration (log NH 21-23/sq cm) toward the nuclear energy source, despite a clear view of the broad emission line region. Our Cycle 2 Chandra sample was selected from the Two Micron All-Sky Survey (2MASS) red AGN catalog, a previously unknown population whose number density rivals that of optically selected AGN. We propose observations of 20 more and 2 previously undetected 2MASS AGN yielding a sample of 46, clearly pre-selected for complex absorption and sufficient to study the relative X-ray and optical obscuration for each AGN class. Results are key to understanding the AGN population and thus the importance of accretion in the universe. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 01:20:31.60 +20:03:27.90 2MASS012031+2003 ACIS-S NONE 4.50 04:09:24.90 +07:58:56.10 2MASS040925+075856 ACIS-S NONE 3.30 04:20:32.10 -20:47:59.20 2MASS042032-204759 ACIS-S NONE 4.50 07:48:25.20 +69:47:12.20 2MASS074825+694712 ACIS-S NONE 4.20 09:38:44.50 +00:57:15.70 2MASS093844+005716 ACIS-S NONE 1.40 10:21:26.70 +63:11:30.20 2MASS102127+631130 ACIS-S NONE 6.30 10:40:43.70 +59:34:09.20 2MASS104044+593409 ACIS-S NONE 1.40 10:49:43.40 +58:37:50.40 2MASS104943+583750 ACIS-S NONE 5.00 11:27:51.10 +24:32:08.10 2MASS112751+243208 ACIS-S NONE 4.30 12:30:15.50 +03:02:54.70 2MASS123016+030255 ACIS-S NONE 3.40 12:43:49.40 -08:02:48.20 2MASS124349-080248 ACIS-S NONE 4.20 13:17:04.40 -17:39:12.60 2MASS131704-173913 ACIS-S NONE 3.20 13:50:37.40 -06:32:15.50 2MASS135037-063216 ACIS-S NONE 1.60 14:18:50.00 +68:04:09.60 2MASS141850+680410 ACIS-S NONE 3.40 14:53:31.50 +13:53:58.70 2MASS145331+1353 ACIS-S NONE 9.00 15:07:06.40 -12:25:15.90 2MASS150706-122516 ACIS-S NONE 2.70 15:11:41.30 +05:18:09.50 2MASS151141+051810 ACIS-S NONE 2.20 15:36:27.70 +61:46:41.70 2MASS153628+614642 ACIS-S NONE 4.50 17:55:03.80 +67:51:08.40 2MASS175504+675108 ACIS-S NONE 4.00 20:24:20.50 -57:23:43.60 2MASS202421-572344 ACIS-S NONE 3.00 20:25:50.70 -49:58:12.80 2MASS202551-495813 ACIS-S NONE 3.30 22:22:21.10 +19:59:47.40 2MASS222221+195947 ACIS-S NONE 3.50 =================================================================================== Proposal Number: 04700556 Proposal Title: CHANDRA IMAGING OF A COMPLETE SAMPLE OF LOW LUMINOSITY RADIO GALAXIES:JETS VS. DISKS IN THE BLACK HOLE PARADIGM PI: CHRISTOPHER O'DEA Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose to obtain ACIS-S observations of 5 low luminosity radio galaxies. Combined with existing and forthcoming archival data, these sources enable the creation of an unbiased, complete, distance limited sample of 13 FRI galaxies. We will use the Chandra observations to construct a broad band spectral energy distribution of the nucleus in these objects and conduct detailed analyses of the X-ray properties in order to determine whether they are dominated by unresolved jets or low efficiency accretion disks (e.g., advection dominated accretion flows). These results will have fundamental implications for our understanding of activity in galaxies and the relationships between active and non-active galaxies. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 00:39:18.60 +03:19:52.00 UGC 408 ACIS-S NONE 30.00 =================================================================================== Proposal Number: 04700574 Proposal Title: CHANDRA AND XMM-NEWTON TO STUDY THE IONIZATION CONES OF THE SEYFERT 2 GALAXY NGC 5252 PI: MAURO DADINA Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose to observe for 70 ks with both Chandra and XMM-Newton, the Seyfert 2 galaxy that exhibits the most spectacular optical and IR ionization cones: NGC 5252. The goals of this proposal are to: i)firmly demonstrate that the diffuse emission is due to an outflowing gas driven by the central AGN and to determine its physical characteristics; ii)study the past history of the AGN activity of NGC5252 on a, potentially, 10^{5-6} years time scale, depending on the gas outflow velocity; iii)observe in X-rays the ``shadow'' of the dusty torus of this Seyfert 2. Even if only one of the above mentioned goals is achieved, this would represent a significant step forward in the comprehension of the physics of AGN. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 13:38:15.90 +04:32:33.00 NGC 5252 ACIS-S NONE 70.00 =================================================================================== Proposal Number: 04700577 Proposal Title: CHANDRA OBSERVATIONS OF A UNIFORM SAMPLE OF FRI GALAXIES PI: RITA SAMBRUNA Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: An important open question in the study of radio galaxies is the origin of the FRI and FRII division. Possibilities include jet deceleration in FRI sources by a hot circumnuclear medium, or intrinsically less powerful jets in FRIs. To address this issue, we propose ACIS-S observations of a sample of FRIs, well-matched to our FRII sample from cycle 2. The Chandra observations will: 1) study the jet X-ray emission, and with available data at longer wavelengths derive jet Lorentz factor and kinetic power; 2) study the X-ray emission from the cores, determining the fraction of core power channeled into the jet; and 3) search for the hot decelerating medium around the cores. Comparing with our AO2 sample of FRIIs, we will unravel the origin of the FRI/II dichotomy. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 13:24:51.40 +36:22:42.00 1322+36 ACIS-S NONE 30.00 15:23:26.90 +28:37:32.00 1521+28 ACIS-S NONE 30.00 22:31:20.50 +39:21:30.00 2229+39 ACIS-S NONE 30.00 =================================================================================== Proposal Number: 04700592 Proposal Title: ELUSIVE ACTIVE GALACTIC NUCLEI IN STARBURST GALAXIES PI: ROBERTO MAIOLINO Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: There is growing evidence that the optical classification of active galaxies is incomplete or even deceiving. We have identified a sample of starburst galaxies characterized by nuclear radio cores and by nuclear unresolved mid-IR sources, which strongly suggest the presence of a powerful, buried active nucleus, although the latter is not identified in the optical. We propose a pilot program with Chandra on a small subsample of these galaxies aimed at unambiguosly testing the presence of AGNs in their nuclei by detecting their X-ray signatures. If these starburst galaxies are confirmed to host buried AGNs this would have important implications on the estimate of the AGN fraction in the local Universe. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 02:54:01.80 +14:58:25.00 UGC2369 ACIS-S NONE 10.00 08:38:24.10 +25:45:17.00 NGC2623 ACIS-S NONE 20.00 12:26:54.60 -00:52:39.00 NGC4418 ACIS-S NONE 20.00 12:48:13.50 -03:20:02.00 NGC4691 ACIS-S NONE 10.00 =================================================================================== Proposal Number: 04700593 Proposal Title: EFFECTS OF INTERGALACTIC GAS ON STARBURST WINDS PI: JESPER RASMUSSEN Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: Starburst winds are recognized as key elements in galaxy formation and evolution and as contributors to the chemical enrichment of the intergalactic medium (IGM) of groups and clusters. In groups the hot IGM may confine the wind, resulting in much reduced gas loss from the galaxy. No studies have been undertaken showing the effects of a confining medium on the wind. We propose to carry out the first observations of the structure of starburst winds in rich environments with Chandra. Comparison with wind properties of isolated starburst galaxies will permit us to establish the effects of a confining external medium. This will provide an important check on our understanding of the chemical and energetic evolution of bound systems, over scales ranging from small galaxies to clusters. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:06:25.40 -31:57:15.00 NGC 1800 ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04700598 Proposal Title: CHANDRA SPECTROSCOPY OF THE MOST LUMINOUS NEARBY QUASAR, PDS 456 PI: JAMES REEVES Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose a 150 ksec Chandra-HETGS observation of the most luminous nearby quasar, PDS 456. PDS 456 is the brightest known quasar, twice as luminous as 3C 273. PDS 456 shows some remarkable properties; broad absorption lines are present in our XMM-RGS spectrum together with a series of ionized iron K edges above 7 keV. Thus PDS 456 the ideal candidate to study at the highest resolution with the HETGS. We will utilize the high spectral resolution of the HETGS to resolve the absorption line profiles, measuring the velocity widths and outflow velocities, and hence determine the geometry and location of the outflowing gas. These measurements could provide evidence for a massive outflow in PDS 456, requiring that accretion occurs at or exceeding the Eddington rate. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 17:28:19.80 -14:15:56.00 PDS 456 ACIS-S HETG 150.00 =================================================================================== Proposal Number: 04700635 Proposal Title: A CHANDRA SURVEY OF THE MOST LUMINOUS QUASARS AT Z>4 PI: CRISTIAN VIGNALI Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose exploratory snapshot observations of 11 of the most luminous and optically brightest quasars at z>4. Our science goals are (1) to determine the X-ray fluxes, X-ray luminosities, optical-to-X-ray slopes, and broad-band spectral energy distributions of these quasars, (2) to constrain X-ray spectral properties using hardness ratios and stacking analyses, (3) to facilitate spectroscopic observations with XMM-Newton, and (4) to lay key groundwork for future high-redshift X-ray efforts with Constellation-X and XEUS. We will obtain supporting optical spectroscopy with the queue-scheduled 8-m Hobby-Eberly Telescope. The proposed project will complement our other studies of z>4 quasars using Chandra, XMM-Newton, and archival data. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 03:34:13.40 -16:12:04.80 BR 0331-1622 ACIS-S NONE 5.00 03:55:04.90 -38:11:42.30 BR 0353-3820 ACIS-S NONE 4.00 04:19:50.90 -57:16:13.10 BR 0418-5723 ACIS-S NONE 4.00 04:26:10.30 -22:02:17.60 BR 0424-2209 ACIS-S NONE 5.00 07:47:49.70 +44:34:20.10 PSS 0747+4434 ACIS-S NONE 5.00 10:58:58.40 +12:45:54.80 PSS 1058+1245 ACIS-S NONE 5.00 11:20:10.30 -13:46:25.70 BRI 1117-1330 ACIS-S NONE 5.00 15:06:54.50 +52:20:05.20 PSS 1506+5220 ACIS-S NONE 5.00 16:46:56.40 +55:14:46.00 PSS 1646+5514 ACIS-S NONE 5.00 22:16:51.90 -67:14:43.40 BR 2213-6729 ACIS-S NONE 5.00 23:44:03.20 +03:42:25.50 PSS 2344+0342 ACIS-S NONE 5.00 =================================================================================== Proposal Number: 04700354 Proposal Title: PROBING THE STRUCTURE OF THE NARROW-LINE REGION IN SEYFERT GALAXIES WITH CXO IMAGING SPECTROSCOPY PI: STEVEN KRAEMER Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: One of the most striking aspects of the Seyfert phenomenon is the conical structure of the Narrow Emission Line Regions (NLRs) which, in the Unified Model, is the result of collimation of the ionizing radiation. Recent HST imaging spectroscopy shows evidence of accelerating mass outflows and rich dynamics. The handful of sources with known extended NLRs that have been imaged to date with CXO reveal tantalizing insights into an NLR/X-ray connection. Here we propose to obtain 20 ksec images of the 8 next best targets. All of these Seyferts show [O III] emission on scale > few arcsec, hence easily resolvable by CXO. Our prime goal is to address whether there is indeed a correlation between the extended X-ray structure and other properties of the NLR. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 02:59:58.70 +36:49:13.10 MRK 1066 ACIS-S NONE 20.00 03:36:45.40 -35:59:56.70 NGC 1386 ACIS-S NONE 20.00 14:42:23.90 -17:15:11.00 NGC 5728 ACIS-S NONE 20.00 22:07:02.10 +10:14:00.60 NGC 7212 ACIS-S NONE 20.00 =================================================================================== Proposal Number: 04700707 Proposal Title: ARE ALL NARROW-LINE SEYFERT 1S ULTRASOFT X-RAY SOURCES? PI: RICHARD POGGE Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: Narrow-Line Seyfert 1s exhibit extreme optical and X-ray properties thought to reflect high accretion rates (m-dot) onto relatively low-mass black holes. A defining characteristic of NLS1s is an ultrasoft X-ray spectrum. We have identified 150 new NLS1s in the SDSS Early Data Release. 50 are detected in the ROSAT All-Sky Survey and show ultrasoft spectra, but most (2/3) were not detected. Of these, 17 have brightnesses and redshifts comparable to those detected, and should have been detected if they too are ultrasoft. This proposal is to observe 17 undetected NLS1s with ACIS-S to measure their X-ray spectral slopes. Finding NLS1s that are not ultrasoft has important implications for understanding how X-ray emission is related to the AGN accretion process. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 00:23:05.00 -01:07:43.50 SDSS J002305.03-0107 ACIS-S NONE 2.00 00:27:52.40 +00:26:15.80 SDSS J002752.39+0026 ACIS-S NONE 2.00 01:56:52.40 -00:12:22.00 SDSS J015652.43-0012 ACIS-S NONE 2.00 02:27:56.30 +00:57:33.10 SDSS J022756.28+0057 ACIS-S NONE 2.00 02:28:41.50 +00:52:08.60 SDSS J022841.48+0052 ACIS-S NONE 2.00 03:14:27.50 -01:11:52.40 SDSS J031427.47-0111 ACIS-S NONE 2.00 10:13:14.90 -00:52:33.50 SDSS J101314.86-0052 ACIS-S NONE 2.00 10:42:30.10 +01:02:23.70 SDSS J104230.14+0102 ACIS-S NONE 2.00 12:14:15.20 +00:55:11.40 SDSS J121415.17+0055 ACIS-S NONE 2.00 12:59:43.60 +01:02:55.10 SDSS J125943.59+0102 ACIS-S NONE 2.00 13:11:08.50 +00:31:51.80 SDSS J131108.48+0031 ACIS-S NONE 2.00 14:12:34.70 -00:34:60.00 SDSS J141234.68-0035 ACIS-S NONE 2.00 14:30:30.20 -00:11:15.10 SDSS J143030.22-0011 ACIS-S NONE 2.00 14:49:32.70 +00:22:36.30 SDSS J144932.70+0022 ACIS-S NONE 2.00 14:51:23.00 -00:06:25.92 SDSS J145123.02-0006 ACIS-S NONE 2.00 17:05:46.90 +63:10:59.10 SDSS J170546.91+6310 ACIS-S NONE 2.00 23:38:53.80 +00:48:12.40 SDSS J233853.83+0048 ACIS-S NONE 2.00 =================================================================================== Proposal Number: 04700706 Proposal Title: X-RAY CONSTRAINTS ON THE STRUCTURE OF THE BROAD EMISSION LINE REGION IN QUASARS PI: GORDON RICHARDS Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose exploratory Chandra observations of a sample of quasars from the Sloan Digital Sky Survey that were selected according to unique properties of their broad emission line regions (BELR), specifically the blueshift of the C~IV emission line with respect to the Mg II emission line. The C~IV blueshift is likely to be a good diagnostic of the line-of-sight structure of the BELR in quasars (Richards et al. 2002). Based on correlations with radio data and broad absorption line properties, we predict that those quasars with larger C~IV blueshifts may be seen more edge-on such that they are more likely to be obscured in the X-ray and will have harder X-ray spectra and alpha_ox<-2. These observations will help to place strong constraints upon the disk-wind model of the BELR. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 00:06:54.10 -00:15:33.40 SDSS J000654.11-0015 ACIS-S NONE 4.55 00:51:02.40 -01:02:44.30 SDSS J005102.42-0102 ACIS-S NONE 3.73 01:48:12.20 +00:01:53.20 SDSS J014812.23+0001 ACIS-S NONE 3.76 01:56:50.28 +00:53:08.40 SDSS J015650.28+0053 ACIS-S NONE 5.50 02:08:45.50 +00:22:36.00 SDSS J020845.53+0022 ACIS-S NONE 3.50 11:51:15.40 +00:38:26.90 SDSS J115115.38+0038 ACIS-S NONE 3.88 =================================================================================== Proposal Number: 04700768 Proposal Title: THE X-RAY PROPERTIES OF ULTRALUMINOUS INFRARED GALAXIES (ULIGS) PI: ANDREW WILSON Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: Ultraluminous Infrared Galaxies (ULIGs) are of fundamental importance in many areas, including their large contribution to the submillimeter/far-infrared background, the role played by galactic mergers in forming some or all elliptical galaxies, the triggering of circumnuclear starbursts and their ``superwinds'', the potential growth and fuelling of massive black holes and the origin of quasars. Progress in understanding ULIGs is limited by uncertainty in whether the high luminosity results from a starburst or accretion onto a massive black hole. We argue that Chandra X-ray observations are the best means of resolving this controversy and propose a survey of 16 ULIGs covering the full range of their luminosities and infrared colors. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 00:21:26.50 -08:39:27.10 F00188-0856 ACIS-S NONE 10.00 01:02:49.90 -22:21:57.00 F01004-2237 ACIS-S NONE 10.00 01:59:50.20 +00:23:40.60 F01572+0009 ACIS-S NONE 10.00 03:54:42.20 +00:37:02.40 Z03521+0028 ACIS-S NONE 10.00 04:12:19.50 -28:30:24.40 F04103-2838 ACIS-S NONE 10.00 10:21:42.80 +13:06:55.30 F10190+1322 ACIS-S NONE 10.00 12:02:26.80 -01:29:15.70 Z11598-0112 ACIS-S NONE 10.00 12:09:45.10 -05:01:13.90 F12072-0444 ACIS-S NONE 10.00 12:13:46.10 +02:48:42.40 F12112+0305 ACIS-S NONE 10.00 15:15:55.20 -20:09:17.00 F15130-1958 ACIS-S NONE 10.00 15:26:59.90 +35:58:34.00 F15250+3609 ACIS-S NONE 10.00 16:11:40.40 -01:47:06.50 F16090-0139 ACIS-S NONE 10.00 17:23:22.20 -00:17:02.10 F17208-0014 ACIS-S NONE 10.00 23:39:01.20 +36:21:08.60 F23365+3604 ACIS-S NONE 10.00 =================================================================================== Proposal Number: 04700776 Proposal Title: WHAT KIND OF JETS DOES NATURE MAKE? X-RAY CHARACTERIZATION OF THE FIRST FLAT SPECTRUM SAMPLE PI: GIOVANNI FOSSATI Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: The FIRST Flat Spectrum Sample (FFSS) is a deep radio-selected sample, unbiased with respect to X-ray emission. It is designed to enable us to determine the true census of the different types of blazars, resolving a long-standing uncertainty, and the first step towards understanding how Nature makes jets. This proposal aims to determine the "type" of FIRST blazars, which is easily determined from radio-optical-X-ray color and basic information about X-ray spectrum. We propose to obtain fluxes and hardness ratios for a subsample of the FFSS blazars, for which no X-ray information currently exists. These are largely radio-bright/X-faint, "red" objects missing from X-ray surveys. With this information we will be able to answer the key question: "What kind of jets does Nature make?" Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 07:21:32.00 +27:42:12.90 87GB 0718+2748 ACIS-S NONE 3.50 07:29:47.60 +49:53:17.10 TXS 0726+499 ACIS-S NONE 6.00 07:59:28.30 +30:10:29.00 TXS 0756+303 ACIS-S NONE 4.50 08:20:20.20 +36:40:04.80 FIRST J0820+3640 ACIS-S NONE 7.50 08:24:39.00 +40:57:08.20 TXS 0821+411 ACIS-S NONE 3.00 08:53:17.80 +28:13:50.00 87GB 0850+2825 ACIS-S NONE 4.00 09:23:48.00 +31:07:53.90 B2 0920+31B ACIS-S NONE 5.00 09:41:49.70 +41:21:04.60 FIRST J0941+4121 ACIS-S NONE 8.00 13:01:32.60 +46:34:03.00 TXS 1259+468 ACIS-S NONE 3.50 13:44:43.70 +55:03:00.60 87GB 1342+5518 ACIS-S NONE 3.50 14:30:40.60 +36:49:04.10 TXS 1428+370 ACIS-S NONE 4.00 16:15:41.20 +47:11:12.00 B3 1614+473 ACIS-S NONE 4.00 17:01:24.60 +39:54:37.10 B3 1659+399 ACIS-S NONE 3.50 =================================================================================== Proposal Number: 04700805 Proposal Title: TYPE II QUASARS AMONG Z>4 STRONG LYMAN ALPHA SOURCES PI: SANGEETA MALHOTRA Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: Strong Lyman-alpha emission is expected both from primordial galaxies and from the type II quasars required to explain the hard x-ray background. We have identified ~300 Ly-alpha sources at redshifts 4.5 and 5.7. About 60% of these show rest equivalent widths >200 Angstrom, which requires active nuclei, or extreme populations of massive stars. Our Ly-alpha survey (LALA) is a unique resource for determining the space density of type II quasars at high z efficiently. The large fields of ACIS and LALA will allow us to observe 60 ly-alpha emitters, including the brightest narrow line Ly-alpha emitter with EW=660. This will have implications for composition of the X-ray background, background radiation at other wavelengths, and structure formation (stars vs black holes) in the early universe. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 02:04:44.25 -05:05:33.82 LALA CETUS FIELD/LAL ACIS-I NONE 15.00 02:04:44.25 -05:05:33.82 LALA CETUS FIELD/LAL ACIS-I NONE 165.00 =================================================================================== Proposal Number: 04700828 Proposal Title: THE ACTIVE NUCLEUS AND 200-KPC X-RAY JET IN NGC 6251 PI: MARTIN HARDCASTLE Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: The jet of the FRI radio galaxy NGC 6251 is known to be an X-ray source on scales out to 200 kpc from the nucleus, making it the largest-scale FRI X-ray jet known. However, existing observations do not provide adequate information on the structure or spectrum of any of the X-ray jet components or on the spectrum of the active nucleus. We propose to make a sensitive observation of this unique object. We will measure the X-ray spectrum at multiple points along the jet to determine the emission mechanism and search for differences in particle acceleration as a function of distance. We will also determine whether the hot gas around the jet has pressure sufficient to confine it, and we will make a good spectrum of the X-ray nucleus for comparison with radio and optical observations. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 16:32:31.90 +82:32:16.40 NGC 6251 ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04700839 Proposal Title: CHANDRA OBSERVATIONS OF THE FIRST SAMPLE OF RADIO-LOUD NARROW LINE SEYFERT I GALAXIES PI: SALLY LAURENT-MUEHLEISEN Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: Very few radio-loud Narrow Line Seyfert I galaxies (NLS1s) are known. These objects, however, present an interesting dilemma: radio luminosity in quasars correlates well with black hole mass, but the leading NLS1 unification theory hypothesizes that NLS1s differ from classical Seyferts by having smaller black holes which accrete near the Eddington limit. We have created a new sample of exclusively radio-loud (and luminous) NLS1s and propose to study their X-ray properties with Chandra. Specifically, we propose to measure the X-ray spectral slope for 11 radio-loud NLS1s and to compare our results with those for samples of radio-quiet NLS1s, classical Seyferts and radio-loud and -quiet AGN in order to determine what physical property unifies NLS1s and other classes of AGN. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 01:00:32.20 -02:00:46.30 FIRST J010032-020046 ACIS-S NONE 10.00 07:06:25.10 +39:01:51.60 FIRST J070625+390151 ACIS-S NONE 10.00 07:23:02.30 +50:54:48.00 FIRST J072302+505448 ACIS-S NONE 10.00 07:44:02.20 +51:49:17.50 FIRST J074402+514917 ACIS-S NONE 10.00 10:38:59.60 +42:27:42.00 FIRST J103859+422742 ACIS-S NONE 10.00 11:02:23.40 +22:39:20.70 FIRST J110223+223920 ACIS-S NONE 10.00 11:40:47.90 +46:22:04.80 FIRST J114047+462204 ACIS-S NONE 12.00 12:27:49.20 +32:14:59.00 FIRST J122749+321459 ACIS-S NONE 3.00 14:21:14.10 +28:24:52.20 FIRST J142114+282452 ACIS-S NONE 10.00 16:29:01.30 +40:07:59.60 FIRST J162901+400759 ACIS-S NONE 3.00 16:44:42.50 +26:19:13.20 FIRST J164442+261913 ACIS-S NONE 3.00 =================================================================================== Proposal Number: 04700841 Proposal Title: OBSCURED HIGH REDSHIFT RADIO GALAXIES PI: WIL VAN BREUGEL Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose to observe 3 enigmatic Compact Ultra Steep Spectrum (CUSS) radio sources with Chandra + ACIS-S. They are identified with very faint multi-component galaxies or small groups, have defeated optical and near-IR spectroscopic (emission-line) detection, are compact radio sources and strong sub-mm/mm emitters. Our Chandra observations would allow us to determine whether they are members of the elusive class of heavily obscured (radio-loud) type II quasars. This would not only deepen our understanding of steep spectrum selected radio samples, but might also provide a possible link to studies of the X-ray cosmological background through radio source identification at much lower flux densities in the future. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 03:05:47.40 +35:25:13.40 J0305+3525 ACIS-S NONE 13.00 13:14:17.90 +36:49:14.60 J1314+3649 ACIS-S NONE 9.00 20:44:57.80 +70:44:03.80 J2044+7044 ACIS-S NONE 5.00 =================================================================================== Proposal Number: 04700849 Proposal Title: X-RAYS FROM BROAD ABSORPTION LINE QUASARS WITH EXTREME PROPERTIES PI: PATRICK HALL Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose short exploratory observations of 3 Low-Ionization Broad Absorption Line Quasars with unusual properties. One is the most radio-loud LoBAL quasar known and only the second classical radio double BAL quasar known. Since RLQs are X-ray brighter than RQQs, this BAL quasar should be intrinsically X-ray bright. The second target has LoBAL troughs spanning at least 13000 km/s, with 90% absorption of its flux blueward of MgII. However, since most BAL troughs are saturated, its BAL gas column density may be the same as in less extreme LoBAL quasars; X-ray observations can test this possibility. The last target is a unique bright LoBAL quasar with stronger FeIII than FeII absorption; X-ray data probing absorption from different ionization states will help understand its unique spectrum. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 03:00:00.60 +00:48:28.00 SDSS J0300+0048 ACIS-S NONE 5.00 11:41:11.60 -01:43:07.70 UN J1141-0143 ACIS-S NONE 10.00 22:15:11.90 -00:45:49.90 SDSS J2215-0045 ACIS-S NONE 5.00 =================================================================================== Proposal Number: 04700855 Proposal Title: HIGH RESOLUTION SPECTROSCOPY OF A BLAZAR IN OUTBURST: JET ENVIRONMENT AND THE INTERGALACTIC MEDIUM PI: FABRIZIO NICASTRO Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose to observe up to 3 Blazars in exceptionally high states for 100 ks each with the Chandra ACIS-LETG, to study efficiently both their jet environment as well as possible intervening high ionization metal absorption systems. The observations will be triggered by the Rossi-XTE ASM and will require rapid response times. This observing strategy will guarantee exceptionally high quality spectra containing at least one milion counts in the first orders of the LETGS. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- BLAZAR IN OUTBURST ACIS-S LETG 100.00 11:04:27.30 +38:12:31.80 MRK 421 ACIS-S LETG 100.00 =================================================================================== Proposal Number: 04700866 Proposal Title: X-RAY TRACE OF THE EARLY RISE OF THE QUASAR POPULATION PI: TAKAMITSU MIYAJI Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose to observe quasars with z>2.7 selected from the Palomer Transit Grism Survey (PTGS), which has provided the best example of rising number density of luminous quasars at 2.7 1.86) lensed quasars with magnification factors ranging between a few and ~ 100. The proposed sample will double the number of detected high z lensed quasars. The magnification effect will allow us to search for changes in quasar properties, such as the accretion process over four orders of magnitude in intrinsic X-ray luminosity. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:10:56.90 +09:54:26.80 Q1208+1011 ACIS-S NONE 10.00 =================================================================================== Proposal Number: 04700057 Proposal Title: A STUDY OF QUASAR EVOLUTION WITH THE AID OF LENSING PI: GORDON GARMIRE Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose to observe a sample of high redshift (z > 1.86) lensed quasars with magnification factors ranging between a few and ~ 100. The proposed sample will double the number of detected high z lensed quasars. The magnification effect will allow us to search for changes in quasar properties, such as the accretion process over four orders of magnitude in intrinsic X-ray luminosity. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 08:21:39.10 +12:17:29.00 HS0818+1227 ACIS-S NONE 20.00 10:12:15.70 -03:07:02.00 LBSQ1009-0252 ACIS-S NONE 10.00 =================================================================================== Proposal Number: 04701017 Proposal Title: SIMULTANEOUS XMM-NEWTON AND CXO/HETGS OBSERVATIONS OF SEYFERT 1 GALAXIES PI: IAN GEORGE Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We propose simultaneous XMM-Newton and CXO observations of two bright Seyfert 1 galaxies as part of a long term programme to ensure that such observations are performed for the 20 brightest Seyfert 1 galaxies during the l;ifetimes of the missions. The targets, NGC 526A and MCG-2-58-22, were selected since they are the brightest members of the sample for which neither XMM-Netwon now CXO/HETGS observations have been made/scheduled with adequate signal-to=noise. The proposed observations will anable a number of important scientific issues to be addressed. For example, we will be able to decouple the narrow and broad Fe K alpha line components: a crucial step in determining the real importance of relativisitc effects close to a black hole. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 01:23:54.40 -35:03:55.70 NGC 526A ACIS-S HETG 60.00 =================================================================================== Proposal Number: 04701018 Proposal Title: DECONVOLVING THE FE KA LINE IN NGC 2110 PI: TRACEY TURNER Subject Category: ACTIVE GALAXIES AND QUASARS Abstract: We request simultaneous Chandra (100 ks) and XMM-Newton (50 ks) observation of NGC 2110. The combined data will allow us to tackle key issues which cannot be broached using either dataset alone. The primary goal of deconvolving the broad and narrow components of the Fe Ka line requires simultaneous observation by Chandra and XMM, as recent data have indicated narrow components of Fe Ka to vary. Thus, only simultaneous data will allow us to resolve the controversy regarding the diskline in type 2 AGN. The proposed data will also allow tight constraints on the absorbing gas. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:52:11.40 -07:27:23.00 NGC 2110 ACIS-S HETG 100.00 *********************************************************************************** CLUSTERS OF GALAXIES -------------------------------------------------- =================================================================================== Proposal Number: 04800001 Proposal Title: THE HOST GALAXIES OF TIME DELAY LENSES: AN INDEPENDENT ROUTE TO THE HUBBLE CONSTANT PI: CHRISTOPHER KOCHANEK Subject Category: CLUSTERS OF GALAXIES Abstract: Because of its importance in setting the distance scale, the time scale and in estimating cosmological parameters from the CMB, astronomy needs an estimate of the Hubble constant independent of the local distance scale and its systematic problems. This can be achieved using gravitational lenses with time delay measurements given enough constraints on the gravitational potential of the lens. We will use deep NICMOS observations of the lensed quasar host galaxies in 7 gravitational lenses with time delay measurements to obtain the necessary constraints, determine the dark matter distribution and estimate H0. We also request 30 ksec Chandra ACIS images for each of the 2 systems lacking them (B1608+656 and B1600+434) to measure the mass in nearby or surrounding groups and clusters. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 16:01:40.40 +43:16:47.80 B1600+434 ACIS-S NONE 30.00 16:09:14.00 +65:32:29.00 B1608+656 ACIS-S NONE 30.00 =================================================================================== Proposal Number: 04800012 Proposal Title: A HIGH-REDSHIFT (Z=0.95) CLUSTER REVEALED BY A FIRST BENT-DOUBLE RADIO SOURCE PI: CRAIG SARAZIN Subject Category: CLUSTERS OF GALAXIES Abstract: Bent double-lobed radio sources achieve their morphologies from the relative motion between their host galaxies and the dense ICM associated with the clusters in which they are embedded. Since many of the radio galaxies are hosted by cD ellipticals, thought to be at the bottom of potential wells, the relative motion may be the result of a recent cluster-cluster merger causing bulk motion of the ICM. We have selected a sample of 384 bent doubles from the VLA FIRST survey, and propose here to observe the most distant confirmed object in our sample at z=0.95 (10 spectroscopic redshifts). Measurement of the mass and temperature of this cluster is an important complement to those values measured from clusters selected from optical and X-ray surveys and will help to constrain Omega. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 11:37:33.80 +30:00:10.00 BD1137+3000 ACIS-S NONE 20.00 =================================================================================== Proposal Number: 04800055 Proposal Title: CLUSTER - CL1641+4001 PI: STEPHEN MURRAY Subject Category: CLUSTERS OF GALAXIES Abstract: This object will complete a flux-limited (fx>2e-13) sample of distant (z>0.4) clusters of galaxies derived from the ROSAT-CfA cluster survey and observed within the Chandra GTO program. The sample will be used for cosmological constraints using the cluster temperature function evolution. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 16:41:52.50 +40:01:29.00 CL1641+4001 ACIS-I NONE 50.00 =================================================================================== Proposal Number: 04800056 Proposal Title: SELF-INTERACTING DARK MATTER HALOS ON SUB-CLUSTER SCALES PI: GORDON GARMIRE Subject Category: CLUSTERS OF GALAXIES Abstract: Search NGC1132 for intensity profile stude to search for Dark Matter effects. This extends earlier observation of 14ks. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 02:52:52.00 -01:16:29.60 NGC 1132 ACIS-S NONE 40.00 =================================================================================== Proposal Number: 04800149 Proposal Title: DISENTANGLING THE INFLUENCE OF COSMOLOGICAL PARAMETERS AND STRUCTURE FORMATION IN THE UNIVERSE WITH DISTANT CLUSTERS OF PI: MELVILLE ULMER Subject Category: CLUSTERS OF GALAXIES Abstract: The detection and study of distant clusters with redshifts beyond unity is very important to study cluster evolution, which is strongly linked to structure formation and cosmological parameters. In a search for distant clusters in ROSAT PSPC pointings we recently found two very promising high redshift cluster candidates with estimated redshifts between z = 1.2--1.7 and corresponding bolometric X-ray luminosities of about 1E45 erg/sec. We propose to observe these two candidates with Chandra and XMM-Newton to determine their form, temperature and redshift, which will allow us to disentangle the interplay between cosmological parameters and structure formation. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:05:52.60 +44:29:10.00 RXJ1205 ACIS-S NONE 30.00 =================================================================================== Proposal Number: 04800167 Proposal Title: THE MASS DISTRUBUTION IN THE MOST DISTANT VIRIALIZED GALAXY CLUSTER KNOWN PI: HARALD EBELING Subject Category: CLUSTERS OF GALAXIES Abstract: We propose deep Chandra/ACIS-I and HST/ACS observations of the very distant, X-ray luminous cluster ClJ1415.1+3612 to measure its gas and dark matter distribution from X-ray and gravitational lensing data, and to conduct a multi-color morphological analysis of the cluster's galaxy population. At z=1.013 this exceptional system is the most distant, massive (kT>7 keV) cluster known. Evidence of strong lensing in the cluster core from ground-based imaging, the presence of emission lines characteristic of a cooling flow in the spectrum of the cD galaxy, and an undisturbed X-ray morphology in a ROSAT observation all suggest a virialized system. With only one comparable cluster currently known, ClJ1415.1+3612 is a prime target for cosmological and physical structure formation studies at z~1. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 14:15:11.20 +36:12:04.00 CLJ1415.1+3612 ACIS-I NONE 94.00 =================================================================================== Proposal Number: 04800192 Proposal Title: SPATIALLY RESOLVED OBSERVATION OF A MAJOR MERGING EVENT IN THE SHAPLEY SUPERCLUSTER PI: STEFANO ETTORI Subject Category: CLUSTERS OF GALAXIES Abstract: We propose to fully exploit the Chandra unique capability in spatially resolving (i) the emission, (ii) the temperature and (iii) the metal abundance distribution of the intra/inter cluster plasma on arcsecs scale for the filament that includes 3 bright clusters and 2 groups of galaxies in the core of the Shapley Supercluster, the largest and richest system in the nearby Universe Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 13:23:49.40 -31:43:59.00 A3556 ACIS-I NONE 20.00 13:29:55.10 -31:33:53.00 SC1327-312 ACIS-I NONE 20.00 13:31:27.80 -31:49:08.00 SC1329-313 ACIS-I NONE 20.00 13:33:36.00 -31:40:27.00 A3562 ACIS-I NONE 20.00 =================================================================================== Proposal Number: 04800280 Proposal Title: SURVEYING THE FORNAX CLUSTER OF GALAXIES PI: CALEB SCHARF Subject Category: CLUSTERS OF GALAXIES Abstract: Low luminosity X-ray clusters of galaxies are the dominant reservoirs of bound matter in the Universe. At a distance of 20 Mpc, the Fornax cluster has an immense collection of the highest quality multi-wavelength data, making it an exceptional laboratory for studying the astrophysics of these systems. We propose surveying an inner region of Fornax with Chandra's unprecedented combination of spatial and spectral resolution to produce a keystone dataset with a long-term legacy. We will investigate the interactions of cluster galaxies with the ICM, their populations of globular clusters, search for emission from dwarf galaxies, ultra-compact systems, and intra-cluster planetary nebulae, and compare the ICM metal contents with the detailed history of stellar populations in Fornax. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 03:35:45.90 -35:15:45.00 FORNAX CLUSTER ACIS-I NONE 50.00 03:36:40.50 -35:27:01.00 FORNAX CLUSTER ACIS-I NONE 50.00 03:36:40.50 -35:04:49.00 FORNAX CLUSTER ACIS-I NONE 50.00 03:37:35.10 -35:16:03.00 FORNAX CLUSTER ACIS-I NONE 50.00 03:37:35.30 -35:37:57.00 FORNAX CLUSTER ACIS-I NONE 50.00 03:38:30.00 -35:49:04.00 FORNAX CLUSTER ACIS-I NONE 50.00 03:38:30.00 -35:27:04.00 FORNAX CLUSTER ACIS-I NONE 50.00 03:38:58.30 -35:10:46.00 FORNAX CLUSTER ACIS-I NONE 50.00 03:39:24.60 -35:38:09.00 FORNAX CLUSTER ACIS-I NONE 50.00 03:39:53.30 -35:21:50.00 FORNAX CLUSTER ACIS-I NONE 50.00 =================================================================================== Proposal Number: 04800327 Proposal Title: A SEARCH FOR FOSSILS OF FEEDBACK IN THREE RADIO- AND OPTICALLY-QUIET COOLING FLOWS PI: MEGAN DONAHUE Subject Category: CLUSTERS OF GALAXIES Abstract: In order to isolate the effects of feedback from radio sources and star formation in cluster coooling flows, we have identified a sample of 5 cooling flow clusters with high inferred cooling rates which do not show evidence for a powerful radio source nor optical emission line nebulae, which are commonly present in such systems. We propose to observe 3 of these clusters with ACIS-S to re-derive improved cooling rates, density distributions, and temperature profiles, and to look for evidence of previous feedback in the form of ``ghost cavities''. Identifying the characteristics these clusters share and do not share with the more common variety of cooling flows (of which there are at least 19 archived examples) is key to solving the ``cooling flow'' problem. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:58:41.60 -01:45:42.90 ABELL 1650 ACIS-S NONE 30.00 17:02:42.60 +34:03:37.40 ABELL 2244 ACIS-S NONE 60.00 =================================================================================== Proposal Number: 04800347 Proposal Title: THE HIFLUGCS CLUSTER SURVEY: A CORNERSTONE FOR COSMOLOGY PI: CRAIG SARAZIN Subject Category: CLUSTERS OF GALAXIES Abstract: Statistical studies of galaxy clusters yield tight constraints on cosmological parameters, the formation of large scale structure, and the nature of dark matter/energy. Dominant sources of uncertainty today are systematic effects, affecting flux, gas temperature, and mass measurements. We propose a detailed systematic investigation of processes in the very cluster centers requiring Chandra and a complete statistical sample of bright nearby clusters. HIFLUGCS is the best currently available local cluster sample in terms of homogeneous X-ray selection based on the ROSAT All-Sky Survey, completeness, size, and availability of a large fraction of high quality observations. Analyzing the Chandra observations for this sample we will constrain the density of the universe to competitive accuracy. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 00:56:16.13 -01:15:18.40 A0119 ACIS-I NONE 12.00 02:57:41.58 +06:01:28.81 A0400 ACIS-I NONE 22.00 03:41:17.53 +15:23:47.50 IIIZW54 ACIS-I NONE 24.00 04:25:51.30 -08:33:38.00 EXO0422 ACIS-I NONE 10.00 12:17:41.30 +03:39:37.60 ZWCL1215 ACIS-I NONE 12.00 12:59:22.45 -04:11:46.00 A1651 ACIS-I NONE 10.00 13:26:53.70 -27:10:35.50 A1736 ACIS-I NONE 15.00 15:23:05.35 +08:36:32.00 A2063 ACIS-I NONE 9.00 23:47:42.80 -28:08:35.00 A4038 ACIS-I NONE 6.00 =================================================================================== Proposal Number: 04800391 Proposal Title: OBSERVING THE X-RAY LUMINOUS GALAXY CORONAE IN A1367 PI: ALEXEY VIKHLININ Subject Category: CLUSTERS OF GALAXIES Abstract: The 40 ksec CHANDRA ACIS-S observation of A1367 reveals luminous X-ray coronae in three galaxies (NGC 3842, NGC 3837, and UGC 6697) belonging to this dynamically young cluster. We propose a follow-up 50 ksec ACIS-S observation centered at those galaxies. The superior angular resolution of CHANDRA will allow us to study the physical properties of the interstellar medium and its interaction with the cluster gas. The implications of this observation will be very important for understanding the role of heat conduction and magnetic field in galaxy clusters. The proposed investigations are not possible with the existing data because the galaxies are at the off-axis angle over 14 arcmin. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 11:43:54.90 +19:56:30.00 A1367 NW ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04800402 Proposal Title: INTRACLUSTER GAS BULK VELOCITIES IN THE CENTAURUS CLUSTER PI: RENATO DUPKE Subject Category: CLUSTERS OF GALAXIES Abstract: We have recently found significant bulk velocities on the order of 2000 km/s in the ICM of 2 galaxy clusters with ASCA. Such high gas velocities have an impact on our our understanding of formation and evolution of clusters of galaxies as well as in determining ICM fundamental physical characteristics such as mass, energy and metal abundances. Therefore, independent confirmation and expansion of this discovery is crucial. The excellent stability of ACIS gain makes Chandra ideal to make such observation. We propose to build a gas velocity map of A3526 by measuring Doppler shifts of X-ray spectral lines at different spatial regions. To eliminate effects of gain fluctuations we ask for 2 consecutive 35 ksec observations offset by 8'. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:48:41.00 -41:22:36.00 ABELL 3526 ACIS-S NONE 35.00 12:49:05.00 -41:16:17.00 ABELL 3526 ACIS-S NONE 35.00 =================================================================================== Proposal Number: 04800425 Proposal Title: STUDY OF A COLD FRONT IN A MASSIVE COOLING FLOW CLUSTER OF GALAXIES WITH STRONG LENSING PI: PASQUALE MAZZOTTA Subject Category: CLUSTERS OF GALAXIES Abstract: Using the data contained in the Chandra archive we discovered a cold front in the atmosphere of the cluster of galaxies MS1455.0+2232. The importance of this finding is related to the fact that: i) it represents the biggest edge observed so far; ii) it lies in one of the most massive cooling flow clusters known; iii) the optical image of the cluster hosts a lensed arc inside the cold front sector. Moreover the X-ray and the lensig estimates show a discrepancy of a factor 1.8. It has been argued that cold fronts may both influence the development of cooling flows as well as to induce a mass bias that could explain point iii) above. We propose a deep Chandra follow-up of MS1455.0+2232 that will shade light on the above issues. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 14:57:15.00 +22:20:31.00 MS1455.0+2232 ACIS-I NONE 95.00 =================================================================================== Proposal Number: 04800426 Proposal Title: A DETAILED STUDY OF THE LUMINOUS LENSING CLUSTER ABELL 2390 PI: STEVEN ALLEN Subject Category: CLUSTERS OF GALAXIES Abstract: We request a deep 100 ks observation of Abell 2390. This system has the best lensing data of all regular, relaxed clusters of galaxies, in addition to exceptionally high quality optical-dynamical data. The proposed observations will allow us to constrain the projected mass distribution in the cluster core to an accuracy <= 10 per cent, providing a rigorous test of the hydrostatic assumption. We will be able to distinguish between different theoretical models for the slope of the mass profile in the cluster core. The data will provide robust results on the variation of the X-ray gas/total mass ratio as a function of radius. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 21:53:36.80 +17:41:44.00 ABELL 2390 ACIS-S NONE 100.00 =================================================================================== Proposal Number: 04800451 Proposal Title: ENTROPY FLUCTUATIONS IN GALAXY GROUPS PI: TREVOR PONMAN Subject Category: CLUSTERS OF GALAXIES Abstract: It is clear from relationships between the morphology of galaxies in groups and the presence of hot intergalactic gas, that the state of the IGM is related to group evolution. Recent cosmological simulations show that long-lived features in the gas temperature and entropy distribution result from the individual evolutionary histories of groups. We aim to map such features with Chandra in three groups for which we find evidence of interesting features in ROSAT data. Combining these data with an ensemble of results from our cosmological simulations will enable us to use dispersion about the mean entropy properties for the first time, to constrain the individual histories of groups, and to explore the impact of these histories on the properties of their galaxies. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 17:15:22.90 +57:24:40.00 NGC 6338 ACIS-I NONE 50.00 =================================================================================== Proposal Number: 04800458 Proposal Title: COSMOLOGICAL CONSTRAINTS FROM THE X-RAY GAS MASS FRACTION IN THE MOST LUMINOUS, RELAXED CLUSTERS PI: STEVEN ALLEN Subject Category: CLUSTERS OF GALAXIES Abstract: We propose to observe the most X-ray luminous, relaxed clusters of galaxies at high redshifts to measure the apparent variation of the X-ray gas mass fraction with redshift and thereby constrain the present value of the Cosmological Constant, Omega_Lambda. This method, which we have recently applied to Chandra data for lower-redshift clusters, also provides the best available constraint on the mean mass density of the Universe, Omega_M. The proposed observations will allow us to constrain Omega_Lambda to an accuracy of 30%, and provide a direct detection of the effects of the Constant on the geometry of the Universe at 2-3 sigma significance. This would be the first independent confirmation of the SNIa results on Omega_Lambda and represent a major step forwards in cosmological studies. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 14:23:47.80 +24:04:41.40 MACS1423.8+2404 ACIS-S NONE 120.00 =================================================================================== Proposal Number: 04800361 Proposal Title: A CHANDRA SURVEY OF A UNIFORMLY-SELECTED SAMPLE OF HIGH-REDSHIFT GALAXY CLUSTERS PI: GORDON GARMIRE Subject Category: CLUSTERS OF GALAXIES Abstract: Although galaxy clusters are the largest collapsed objects known, and therefore must have formed relatively recently, there is so far little quantitative evidence for evolution of cluster X-ray emission. To address this puzzle, we propose an X-ray survey of clusters at redshifts 0.8 < z < 1.1 discovered in the Red Cluster Sequence (RCS) survey. Our ultimate aim is to obtain sufficient Chandra exposure to measure the X-ray luminosity (Lx) and integrated temperature (T) of every RCS cluster with z>0.8. These data will provide constraints on the evolution of both the Lx-T relation and the morphology of cluster X-ray emission. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 04:39:38.00 -29:04:55.20 RCS0439.6-2905 ACIS-S NONE 85.00 =================================================================================== Proposal Number: 04800521 Proposal Title: REDUCED COOLING & FEEDBACK IN CLUSTER COOLING FLOWS PI: BRIAN MCNAMARA Subject Category: CLUSTERS OF GALAXIES Abstract: We propose to observe three galaxy clusters to examine the effects of energy feedback into the cooling intracluster medium from supernovae, radio sources, and cluster mergers. The observations are designed to test cooling flow models by comparing the X-ray cooling rates to star formation rates on fine spatial scales. The observations will test the universality of emerging correlations between strong nebular emission, sites of massive star formation, and bright X-ray structures in central cluster galaxies, where enhanced cooling may be occurring. The data will allow us to evaluate the likelihood that the large star formation rates and Balmer emission in the central galaxies are related or unrelated to cooling flows. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 04:43:09.70 +02:10:18.00 MS0440.5+0204 ACIS-S NONE 60.00 07:41:50.20 +74:14:51.00 MS0735.6+7421 ACIS-S NONE 50.00 =================================================================================== Proposal Number: 04800566 Proposal Title: THE PHYSICAL PROPERTIES OF A MASSIVE CLUSTER AT Z=1.235 PI: PIERO ROSATI Subject Category: CLUSTERS OF GALAXIES Abstract: We propose to obtain ACIS-I deep imaging of one of the highest redshift massive clusters known to date, RDCS1252-29 at z=1.235. This is the most X-ray luminous of the four clusters at z>1 discovered in the RDCS. Extensive VLT spectroscopy and the presence of strong lensing features suggest a high velocity dispersion (~900 km/s). In combination with scheduled HST/ACS observations, the Chandra data will allow us to measure the physical properties of this remote system. This will include: 1) studying the gas spatial distribution, to be compared with the light distribution from the cluster galaxies; 2) measuring the ICM temperature; 3) determining the cluster mass, to be compared with independent estimates from weak/strong lensing analysis, and velocity dispersion of member galaxies. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:52:54.50 -29:27:18.00 RDCS1252-29 ACIS-I NONE 25.00 12:52:54.50 -29:27:18.00 RDCS1252-29 ACIS-I NONE 165.00 =================================================================================== Proposal Number: 04800683 Proposal Title: AN X-RAY STUDY OF A LENS-SELECTED GROUP OF GALAXIES AT Z=0.29 PI: CHRISTOPHER FASSNACHT Subject Category: CLUSTERS OF GALAXIES Abstract: We are conducting a program to study evolution in the properties of galaxy groups. To create our sample, we are using an exciting new method to find moderate-to-high redshift groups -- through their association with gravitational lenses. We request Chandra time to observe the largest (in terms of confirmed members) and best-studied lens-selected group. We will use the observations to measure the group properties with high precision, thereby reducing the uncertainty in the group's effect on the lensing gravitation potential by at least a factor of two and improving the determination of H_0 with this lens system. In addition, we will compare the group properties to those of local groups and massive clusters at similar redshifts and study the X-ray properties of the lensed quasar. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 07:16:05.00 +47:09:04.90 CLASS B0712+472 ACIS-S NONE 100.00 =================================================================================== Proposal Number: 04800694 Proposal Title: THE ASSEMBLY OF A GIANT GALAXY CLUSTER AT Z=0.545 PI: HARALD EBELING Subject Category: CLUSTERS OF GALAXIES Abstract: We propose a deep ACIS-I observation of MACSJ0717.5+3745, the most X-ray luminous cluster known at z>0.5. Its hugely disturbed X-ray morphology still reflecting the aftermath of a previous major merger event, the system is bound to grow yet more massive when it accretes a companion cluster currently 1.3/h Mpc away in the plane of the sky. From extensive follow-up observations (short ACIS observation, deep optical imaging, redshift survey, weak-lensing study, SZ observation) we find strong evidence for a profound displacement of the system's dark matter, gas and galaxy distributions. To complete an investigation offering unprecedented insight into the assembly of a giant cluster through a series of merger events we wish to measure the gas and temperature distribution in the cluster core. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 07:17:31.00 +37:45:30.00 MACSJ0717.5+3745 ACIS-I NONE 60.00 =================================================================================== Proposal Number: 04800713 Proposal Title: CHANDRA OBSERVATIONS OF A PROTOCLUSTER AT Z = 1.31 PI: MICHAEL LIU Subject Category: CLUSTERS OF GALAXIES Abstract: We propose to obtain modest ACIS-I imaging of a high-redshift protocluster. This field was discovered from an optical/near-IR imaging survey and possesses a large excess of extremely red objects (EROs). Deep Keck spectroscopy confirms the EROs are old galaxies at z=1.31, making our target the highest redshift field of old galaxies known. Based on the field's morphology, we suspect it is not gravitationally-bound, but rather still in the process of formation. Hence, detection of its diffuse X-ray ICM would best be suited to XMM-Newton observations. Here we propose to employ Chandra's superb angular resolution to search for bright point sources in the field. This provides a pilot study for this protocluster, laying the necessary groundwork for future, deeper X-ray studies. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 12:15:49.80 -00:34:32.00 Q1213-0017 ACIS-I NONE 45.00 =================================================================================== Proposal Number: 04800749 Proposal Title: CHANDRA OBSERVATIONS OF TWO DYNAMICALLY YOUNG GALAXY CLUSTERS A2069 AND A2384 PI: MAXIM MARKEVITCH Subject Category: CLUSTERS OF GALAXIES Abstract: X-ray elongated cluster is an interesting class of dynamically young galaxy cluster. It may provide us insights into the early infall and merging stage of the clusters. We propose CHANDRA observations of two bright X-ray elongated clusters: A2384 and A2069. Their special mophologies provide us good opportunities to detect fine structures (e.g., merging shocks or cold fronts) in mergers with the capabilities of CHANDRA. The results will be very valuable for understanding this specific kind of clusters, the nature of gas condensations with or without associated galaxies, and the effects of the merger on the cooling flow. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 21:52:21.00 -19:32:52.00 A2384 ACIS-I NONE 32.00 =================================================================================== Proposal Number: 04800810 Proposal Title: TEMPERATURE AND METAL ABUNDANCE DISTRIBUTIONS OF THE HOT GAS WITHIN ABELL 3571 PI: JIMMY IRWIN Subject Category: CLUSTERS OF GALAXIES Abstract: Abell 3571 is the brightest of the hot cooling flow clusters that lie in a direction of low Galactic column. Also, it is he 6th brightest galaxy cluster overall, and the only cluster of the brightest 20 not yet observed with Chandra. Previous analyses of A3571 showed that this cluster exhibits a rich phenomenology, among them an apparent cooling flow and a central abundance enhancement, apparently associated with SN Ia ejecta dominance, as well as an apparent soft X-ray excess. We propose to observe A3571 with Chandra-S3 for 35 ksec in order to analyze the abundance, temperature, and small scale structure of the central cooler region. This observation will be nicely complemented by an XMM-Newton observation of this cluster already approved for observation. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 13:47:28.10 -32:51:06.80 A3571 ACIS-S NONE 35.00 =================================================================================== Proposal Number: 04800884 Proposal Title: THE NATURE OF LOW SURFACE BRIGHTNESS X-RAY CLUSTERS OF GALAXIES PI: AARON LEWIS Subject Category: CLUSTERS OF GALAXIES Abstract: We propose ACIS-S observations of 5 newly discovered Low Surface Brightness (LSB) X-ray clusters of galaxies. These rich clusters are apparently so lacking in central concentration in X-rays that although above the flux limit, they were missed by the EMSS survey. This omission of high-z X-ray clusters seriously affects estimates of evolution in the cluster XLF and Omega(matter). Chandra will reveal the nature of these new systems: What is their X-ray morphology and why were they missed by the EMSS? Critically: would other new or recent surveys also miss such clusters? ACIS imaging spectroscopy will resolve any confused point sources, and determine if LSB clusters represent a new class of objects: clusters in formation with high Lx, low Tx, and significant substructure. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 07:16:39.60 +37:19:27.80 1310 ACIS-S NONE 24.00 08:51:40.10 +33:31:23.30 1492 ACIS-S NONE 12.00 23:50:48.20 +29:08:20.60 3810 ACIS-S NONE 12.00 =================================================================================== Proposal Number: 04800913 Proposal Title: DOES A SPIRAL-ONLY COMPACT GROUP HAVE DIFFUSE GAS? PI: NAOMI OTA Subject Category: CLUSTERS OF GALAXIES Abstract: The possible absence of diffuse X-rays in compact groups with only spiral members, inferred from the ROSAT observations, would have great impacts on our understanding of galaxy formation and evolution. With our proposed ACIS-S3 observation of HCG80, we aim at placing severe constraints on the presence or absence of the diffuse intragroup gas. The positive detection will not only prove the reality of the bound system but also allow us to probe its internal structure. The negative detection will point to either that the real group is always associated with an early-type galaxy, or that the X-ray emission is preferentially suppressed in spiral-only groups. In either case, we will also be able to study the X-ray morphologies of the member spirals. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 15:59:12.30 +65:13:33.00 HCG80 ACIS-S NONE 20.00 =================================================================================== Proposal Number: 04800927 Proposal Title: CHANDRA OBSERVATIONS OF DLS SHEAR-SELECTED CLUSTERS PI: JOHN HUGHES Subject Category: CLUSTERS OF GALAXIES Abstract: We propose Chandra observations of the most massive clusters currently identified from the Deep Lens Survey (DLS). The DLS is a deep multicolor (BVRz') imaging survey of 28 square degree being carried out at the 4-m telescopes of the US National Observatories (KPNO and CTIO). The DLS shear-selected cluster sample makes it possible for the first time to study clusters in a baryon-independent way. We are pursuing detailed investigations of this sample with HST and ground-based Keck spectroscopy. Chandra observations will meet multiple high-impact scientific goals, specifically, testing the ``fair sample'' hypothesis, calibrating the relationships between cluster mass, size, X-ray luminosity and temperature, and studying the evolution of these relationships with look-back time. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:22:17.00 -48:20:10.00 DLS J0522-4820 ACIS-I NONE 20.00 09:16:00.00 +29:31:34.00 DLS J0916+2931 ACIS-I NONE 20.00 10:49:41.00 -04:17:44.00 DLS J1049-0417 ACIS-I NONE 20.00 10:54:08.00 -05:49:44.00 DLS J1054-0549 ACIS-I NONE 20.00 10:55:12.00 -05:03:43.00 DLS J1055-0503 ACIS-I NONE 20.00 14:02:01.70 -10:19:44.00 DLS J1402-1019 ACIS-I NONE 20.00 14:02:12.00 -10:28:14.00 DLS J1402-1028 ACIS-I NONE 20.00 =================================================================================== Proposal Number: 04800844 Proposal Title: ABELL 520: A LABORATORY EXPERIMENT IN CLUSTER MERGERS PI: DIAB JERIUS Subject Category: CLUSTERS OF GALAXIES Abstract: Abell 520, a rich, z=0.201, X-ray luminous and hot cluster of galaxies is probably the best object known in which to study the effects of mergers upon the cluster environment. Existing X-ray data and radio data provide compelling evidence that a small, compact, sub-cluster plunged through the cluster core. This provides ideal circumstances for a detailed study of the merger's affect on the cluster gas, the evolution of its galaxy population, and the formation of radio halos. Existing radio and galaxy population data (velocities and photometry) coupled with Chandra data will provide a detailed picture of the physics of cluster mergers. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 04:54:03.80 +02:53:33.00 ABELL 520 ACIS-I NONE 71.00 =================================================================================== Proposal Number: 04800980 Proposal Title: THE REMARKABLE ARC IN ABELL 1201 - PROBING THE MASS PROFILE OF CLUSTERS DOWN TO 10KPC PI: ALASTAIR EDGE Subject Category: CLUSTERS OF GALAXIES Abstract: We propose to make a moderately deep Chandra observation of the cluster Abell 1201 (z=0.17, L_x=6x10^44 erg/s) which contains a gravitational arc with a uniquely small radius of curvature (2.4"). This arc provides an opportunity to determine the mass profile of a cluster on a scale of 10kpc. It is on this scale that current N-body simulations have the largest disagreements depending on the nature of dark matter and numerical techniques. The proposed Chandra and HST observations will provide two independent measures of the cluster mass profile from 10-->500kpc to put the small scale mass constraint in context and differentiate between mass model predictions on the smallest scales. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 11:12:54.40 +13:26:10.00 ABELL 1201 ACIS-S NONE 40.00 =================================================================================== Proposal Number: 04800013 Proposal Title: X-RAY STUDIES OF DYNAMICALLY YOUNG CLUSTERS OF GALAXIES PI: STEPHEN MURRAY Subject Category: CLUSTERS OF GALAXIES Abstract: X-ray linearly flattened clusters may represent an early stage of cluster evolution. With the superior angular-resolution of Chandra, we can search for merger shocks/cold fronts during this stage. Substantial substructures are expected to be found. Moreover, we can study the radio-ICM interaction for A514 and a cooling flow for A2384. The clusters selected help to construct a sample of dynamically young clusters. This sample will eventually help the understanding of cluster formation and early stage of evolution. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 04:48:20.56 -20:29:48.00 A514 ACIS-I NONE 45.00 =================================================================================== Proposal Number: 04800990 Proposal Title: X-RAY/SZ DETERMINATION OF COSMOLOGICAL PARAMETERS, PART II PI: LEON VANSPEYBROECK Subject Category: CLUSTERS OF GALAXIES Abstract: These observations form part of a systematic determination of H0 and q0 by combining X-ray observations of distant galaxy clusters with radio measurements of the Sunyaev Zel'dovich effect. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 08:42:57.80 +36:21:54.00 A697 ACIS-I NONE 20.00 =================================================================================== Proposal Number: 04800103 Proposal Title: X-RAY/SZ DETERMINATION OF COSMOLOGICAL PARAMETERS PI: LEON VANSPEYBROECK Subject Category: CLUSTERS OF GALAXIES Abstract: These observations form part of a systematic determination of H0 and q0 by combining X-ray observations of distant galaxy clusters with radio measurements of the Sunyaev Zel'dovich effect. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 01:31:53.30 -13:36:46.80 A209 ACIS-I NONE 10.00 01:52:42.20 +01:00:46.80 A267 ACIS-I NONE 20.00 02:57:08.60 -23:26:06.00 MACS-J0257.1-2325 ACIS-I NONE 20.00 03:29:40.80 -02:11:52.80 MACS-J0329.6-0211 ACIS-I NONE 20.00 04:39:00.50 +07:16:06.00 RXJ0439.0+0715 ACIS-I NONE 20.00 06:47:49.70 +70:14:52.80 MACS-J0647.7+7015 ACIS-I NONE 20.00 07:44:52.90 +39:27:27.00 MACS-J0744.8+3927 ACIS-I NONE 20.00 08:30:53.30 +65:50:02.40 A665 ACIS-I NONE 30.00 09:11:12.00 +17:46:30.00 MACS-J0911.2+1746 ACIS-I NONE 20.00 09:17:53.10 +51:43:44.00 A773 ACIS-I NONE 10.00 11:49:35.00 +22:24:10.80 MACS-J1149.5+2223 ACIS-I NONE 20.00 12:26:51.70 +21:52:25.00 MACS-J1226.8+2153 ACIS-I NONE 20.00 13:35:16.30 +40:59:45.60 A1763 ACIS-I NONE 20.00 13:47:31.90 -11:45:43.20 RXJ1347.5-1145 ACIS-I NONE 60.00 14:26:01.20 +37:49:40.80 A1914 ACIS-I NONE 20.00 16:21:24.00 +38:10:01.20 MACS-J1621.3+3810 ACIS-I NONE 20.00 21:29:26.20 -07:41:27.60 MACS-J2129.4-0741 ACIS-I NONE 20.00 =================================================================================== Proposal Number: 04801019 Proposal Title: MASS CONTENT & DYNAMICAL STATE OF 3 OPTICALLY SELECTED HIGH Z (Z>0.8) CLUSTERS PI: MONIQUE ARNAUD Subject Category: CLUSTERS OF GALAXIES Abstract: We propose to perform a joint XMM/CHANDRA/VIMOS follow-up of three EIS distant clusters recently spectroscopically confirmed using FORS to be at z=0.81,0.94 and 1.14. We propose to observe with IFU of VIMOS the core of these clusters in order to measure their virial mass and study their dynamical state. The XMM/CHANDRA observations will be used to measure the X-ray mass and the morphology of the clusters. This will provide essential information on the physics of gravitational collapse and the relative settling of the gas and galaxies in the dark matter potential. Furthermore the gas entropy in the core and the Lx-T relation will be compared with predictions of various theoretical models, providing greater insight on the physics that givern the ICM evolution. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 09:54:47.50 -20:23:55.20 EIS0954-2023/22 ACIS-S NONE 15.00 *********************************************************************************** EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS -------------------------------------------------- =================================================================================== Proposal Number: 04900340 Proposal Title: A CHANDRA WIDE-FIELD SURVEY TO MAP THE COSMIC WEB AND INVESTIGATE THE EVOLUTION OF NUCLEAR ACCRETION PI: CHRISTINE JONES Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS Abstract: We propose a wide-field X-ray imaging survey with deep and shallow components in order to map the structure and evolution of the Universe to redshift unity, and to probe the nature, environment and evolutionary history of AGN. The observations will cover the Bootes field of the NOAO Deep Wide-Field Survey, that is unique in its wide-field coverage and availability of deep multiwavelength imaging (including VLA and SIRTF) and optical spectroscopy. The Chandra survey is designed to sample volumes appropriate for statistical investigations of cluster environments, the space density of groups, biases in the optical and X-ray selection of groups and clusters, and AGN phenomena in relation to galaxy host properties and their evolution. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 14:25:15.44 +32:50:45.01 SS11 ACIS-I NONE 5.00 14:25:15.44 +33:15:11.61 SD41 ACIS-I NONE 5.00 14:25:15.44 +33:39:38.20 SD16 ACIS-I NONE 5.00 14:25:15.44 +34:04:04.80 SS24 ACIS-I NONE 5.00 14:26:06.54 +32:38:31.71 SS22 ACIS-I NONE 5.00 14:26:06.54 +33:02:58.31 SD52 ACIS-I NONE 5.00 14:26:06.54 +33:27:24.90 SS5 ACIS-I NONE 5.00 14:26:06.54 +33:51:51.50 SS13 ACIS-I NONE 5.00 14:26:58.62 +32:50:45.01 SS54 ACIS-I NONE 5.00 14:26:58.62 +33:15:11.61 SD30 ACIS-I NONE 5.00 14:26:58.62 +33:39:38.20 SD27 ACIS-I NONE 5.00 14:26:58.62 +34:04:04.80 SS35 ACIS-I NONE 5.00 14:27:49.72 +32:38:31.71 SS33 ACIS-I NONE 5.00 14:27:49.72 +33:02:58.31 SS9 ACIS-I NONE 5.00 14:27:49.72 +33:27:24.90 SS6 ACIS-I NONE 5.00 14:27:49.72 +33:51:51.50 SS2 ACIS-I NONE 5.00 14:28:41.80 +32:50:45.01 SS43 ACIS-I NONE 5.00 14:28:41.80 +33:15:11.61 SS19 ACIS-I NONE 5.00 14:28:41.80 +33:39:38.20 SD38 ACIS-I NONE 5.00 14:28:41.80 +34:04:04.80 SS46 ACIS-I NONE 5.00 14:29:32.90 +32:38:31.71 SS44 ACIS-I NONE 5.00 14:29:32.90 +33:02:58.31 SS20 ACIS-I NONE 5.00 14:29:32.90 +33:27:24.90 SD17 ACIS-I NONE 5.00 14:29:32.90 +33:51:51.50 SS47 ACIS-I NONE 5.00 14:30:24.98 +32:50:45.01 SS32 ACIS-I NONE 5.00 14:30:24.98 +33:15:11.61 SS8 ACIS-I NONE 5.00 14:30:24.98 +33:39:38.20 SD49 ACIS-I NONE 5.00 14:30:24.98 +34:04:04.80 SS1 ACIS-I NONE 5.00 14:31:16.08 +32:38:31.71 SS55 ACIS-I NONE 5.00 14:31:16.08 +33:02:58.31 SS31 ACIS-I NONE 5.00 14:31:16.08 +33:27:24.90 SD28 ACIS-I NONE 5.00 14:31:16.08 +33:51:51.50 SS36 ACIS-I NONE 5.00 14:32:08.16 +32:50:45.01 SS21 ACIS-I NONE 5.00 14:32:08.16 +33:15:11.61 SD51 ACIS-I NONE 5.00 14:32:08.16 +33:39:38.20 SS4 ACIS-I NONE 5.00 14:32:08.16 +34:04:04.80 SS12 ACIS-I NONE 5.00 14:32:59.26 +33:02:58.31 SS42 ACIS-I NONE 5.00 14:32:59.26 +33:27:24.90 SD39 ACIS-I NONE 5.00 14:32:59.26 +33:51:51.50 SS25 ACIS-I NONE 5.00 14:33:51.34 +32:50:45.01 SS10 ACIS-I NONE 5.00 14:33:51.34 +33:15:11.61 SD40 ACIS-I NONE 5.00 14:33:51.34 +33:39:38.20 SS15 ACIS-I NONE 5.00 14:33:51.34 +34:04:04.80 SS23 ACIS-I NONE 5.00 14:34:42.44 +33:02:58.31 SS53 ACIS-I NONE 5.00 14:34:42.44 +33:27:24.90 SD50 ACIS-I NONE 5.00 14:34:42.44 +33:51:51.50 SS14 ACIS-I NONE 5.00 14:35:34.52 +33:15:11.61 SD29 ACIS-I NONE 5.00 14:35:34.52 +33:39:38.20 SS26 ACIS-I NONE 5.00 14:35:34.52 +34:04:04.80 SS34 ACIS-I NONE 5.00 14:36:25.62 +33:27:24.90 SS7 ACIS-I NONE 5.00 14:36:25.62 +33:51:51.50 SS3 ACIS-I NONE 5.00 14:37:17.70 +33:39:38.20 SS37 ACIS-I NONE 5.00 14:37:17.70 +34:04:04.80 SS45 ACIS-I NONE 5.00 14:38:08.80 +33:27:24.90 SD18 ACIS-I NONE 5.00 14:38:08.80 +33:51:51.50 SS48 ACIS-I NONE 5.00 =================================================================================== Proposal Number: 04900449 Proposal Title: CHASING QUASAR 2 PI: FABRIZIO FIORE Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS Abstract: About 1/4 of faint Chandra and XMM hard X-ray selected sources has X-ray to optical flux ratio ten times higher than that of optically selected type 1 AGN (which have X/O~1). The redshift and luminosity of this large source population is unknown. If they are high-z, highly obscured AGN, i.e. quasar2, they may carry the largest fraction of accretion power from that shell of Universe. This proposal is to obtain accurate Chandra positions of 4 extreme sources with X/O>30, F(2-10keV)>=2E-14 cgs and X-ray colors indicating strong obscuration. This is the X-ray brightest sample of sources with X/O>30 known, those for which we might expect to find, thanks to the Chandra arcsec positions, optical-NIR counterparts bright enough to obtain photometric redshifts using 8m class telescopes. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 05:39:05.00 -28:37:60.00 PKS0537-28_1 ACIS-I NONE 15.00 05:40:05.00 -28:45:00.00 PKS0537-28_2 ACIS-I NONE 30.00 =================================================================================== Proposal Number: 04900940 Proposal Title: A CHANDRA/XMM ATTACK ON THE ASTROPHYSICS OF THE HARD X-RAY BACKGROUND. PI: IAN MCHARDY Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS Abstract: We request Chandra observations to provide ~1" positions for sources in a 200ks XMM survey and 0.6" positions for sources in a 700ks XMM survey. Over 400 X-ray sources will have high quality X-ray spectra and accurate identifications, even for optically very faint sources where identification is hard, allowing for evolutionary studies. The powerful combination of XMM spectra with CHANDRA positions, and extensive observations in other bands, enables us to understand the astrophysics of the hard X-ray background; ie do the contributors have absorbed, or intrinsically flat, spectra? how do QSO spectra evolve? what is the X-ray emission mechanism of optically inactive galaxies and of narrow emission line galaxies? which non-gravitational source heated galaxy groups? Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 01:45:13.20 -04:29:40.40 XMM 1HR - FIELD 4 ACIS-I NONE 30.00 01:45:38.90 -04:41:19.60 XMM 1HR - FIELD 3 ACIS-I NONE 30.00 =================================================================================== Proposal Number: 04901013 Proposal Title: CHANDRA LARGE SCALE SURVEY OF THE NOAO BOOTES DEEP FIELD PI: STEPHEN MURRAY Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS Abstract: We will survey part of the Northern NOAO Bootes Deep Field using 5 ksec ACIS exposures with the primary goal of mapping the cosmic web to redshift unity. At least 1000 AGN and 50 groups/clusters will be detected in the complete 9 sq. degree survey. The X-ray survey depth is matched to a new CfA redshift survey of the 18,000 galaxies brighter than R=20 and X-ray AGN brighter than R=22 in this region. The redshift survey will include all X-ray clusters with z<0.5 and allow detailed kinematic, environmental, and correlation function studies. The contiguous AGN survey will be used to estimate the power spectrum at z~1. The combination of X-ray images with optical, IR and radio observations provides information not available from a single wavelength. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 14:32:59.26 +32:38:31.71 NOAO FIELD F49 ACIS-I NONE 5.00 =================================================================================== Proposal Number: 04901014 Proposal Title: A CHANDRA WIDE-FIELD SURVEY TO MAP THE COSMIC WEB AND INVESTIGATE THE EVOLUTION OF NUCLEAR ACCRETION PI: CHRISTINE JONES Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS Abstract: We propose a wide-field X-ray imaging survey with deep and shallow components in order to map the structure and evolution of the Universe to redshift unity, and to probe the nature, environment and evolutionary history of AGN. The observations will cover the Bootes field of the NOAO Deep Wide-Field Survey, that is unique in its wide-field coverage and availability of deep multi- wavelength imaging (including VLA and SIRTF) and optical spectroscopy. The Chandra survey is designed to sample volumes appropriate for statistical investigations of cluster environments, the space density of groups, biases in the optical and X-ray selection of groups and clusters, and AGN phenomena in relation to galaxy host properties and their evolution. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 14:25:15.44 +32:26:18.41 SS60 ACIS-I NONE 5.00 14:26:58.62 +32:26:18.41 SS59 ACIS-I NONE 5.00 14:28:41.80 +32:26:18.41 SS58 ACIS-I NONE 5.00 14:30:24.98 +32:26:18.41 SS57 ACIS-I NONE 5.00 14:32:08.16 +32:26:18.41 SS56 ACIS-I NONE 5.00 *********************************************************************************** GALACTIC DIFFUSE EMISSION AND SURVEYS -------------------------------------------------- =================================================================================== Proposal Number: 04910023 Proposal Title: CHANDRA LARGE SCALE SURVEY OF THE NOAO BOOTES DEEP FIELD PI: STEPHEN MURRAY Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS Abstract: We will survey part of the Northern NOAO Bootes Deep Field using 5 ksec ACIS exposures with the primary goal of mapping the cosmic web to redshift unity. At least 1000 AGN and 50 groups/clusters will be detected in the complete 9 sq. degree survey. The X-ray survey depth is matched to a new CfA redshift survey of the 18,000 galaxies brighter than R=20 and X-ray AGN brighter than R=22 in this region. The redshift survey will include all X-ray clusters with z<0.5 and allow detailed kinematic, environmental, and correlation function studies. The contiguous AGN survey will be used to estimate the power spectrum at z~1. The combination of X-ray images with optical, IR and radio observations provides information not available from a single wavelength. Grat- Exp. R.A. Dec. (J2000) Target Name Det. ing Time ----------------------------------------------------------------------------------- 14:25:15.44 +34:28:31.40 NOAO FIELD F43 ACIS-I NONE 5.00 14:25:15.44 +34:52:57.99 NOAO FIELD F62 ACIS-I NONE 5.00 14:25:15.44 +35:17:24.59 NOAO FIELD F60 ACIS-I NONE 5.00 14:25:15.44 +35:41:51.19 NOAO FIELD F35 ACIS-I NONE 5.00 14:26:06.54 +34:16:18.10 NOAO FIELD F54 ACIS-I NONE 5.00 14:26:06.54 +34:40:44.70 NOAO FIELD F8 ACIS-I NONE 5.00 14:26:06.54 +35:05:11.29 NOAO FIELD F38 ACIS-I NONE 5.00 14:26:06.54 +35:29:37.89 NOAO FIELD F24 ACIS-I NONE 5.00 14:26:58.62 +34:28:31.40 NOAO FIELD F32 ACIS-I NONE 5.00 14:26:58.62 +34:52:57.99 NOAO FIELD F51 ACIS-I NONE 5.00 14:26:58.62 +35:17:24.59 NOAO FIELD F4 ACIS-I NONE 5.00 14:26:58.62 +35:41:51.19 NOAO FIELD F46 ACIS-I NONE 5.00 14:27:49.72 +34:16:18.10 NOAO FIELD F65 ACIS-I NONE 5.00 14:27:49.72 +34:40:44.70 NOAO FIELD F19 ACIS-I NONE 5.00 14:27:49.72 +35:05:11.29 NOAO FIELD F27 ACIS-I NONE 5.00 14:27:49.72 +35:29:37.89 NOAO FIELD F13 ACIS-I NONE 5.00 14:28:41.80 +34:28:31.40 NOAO FIELD F21 ACIS-I NONE 5.00 14:28:41.80 +34:52:57.99 NOAO FIELD F40 ACIS-I NONE 5.00 14:28:41.80 +35:17:24.59 NOAO FIELD F15 ACIS-I NONE 5.00 14:28:41.80 +35:41:51.19 NOAO FIELD F57 ACIS-I NONE 5.00 14:29:32.90 +34:16:18.10 NOAO FIELD F11 ACIS-I NONE 5.00 14:29:32.90 +34:40:44.70 NOAO FIELD F30 ACIS-I NONE 5.00 14:29:32.90 +35:05:11.29 NOAO FIELD F16 ACIS-I NONE 5.00 14:29:32.90 +35:29:37.89 NOAO FIELD F2 ACIS-I NONE 5.00 14:30:24.98 +34:28:31.40 NOAO FIELD F10 ACIS-I NONE 5.00 14:30:24.98 +34:52:57.99 NOAO FIELD F29 ACIS-I NONE 5.00 14:30:24.98 +35:17:24.59 NOAO FIELD F26 ACIS-I NONE 5.00 14:30:24.98 +35:41:51.19 NOAO FIELD F1 ACIS-I NONE 5.00 14:31:16.08 +34:16:18.10 NOAO FIELD F22 ACIS-I NONE 5.00 14:31:16.08 +34:40:44.70 NOAO FIELD F41 ACIS-I NONE 5.00 14:31:16.08 +35:05:11.29 NOAO FIELD F5 ACIS-I NONE 5.00 14:31:16.08 +35:29:37.89 NOAO FIELD F58 ACIS-I NONE 5.00 14:32:08.16 +34:28:31.40 NOAO FIELD F64 ACIS-I NONE 5.00 14:32:08.16 +34:52:57.99 NOAO FIELD F18 ACIS-I NONE 5.00 14:32:08.16 +35:17:24.59 NOAO FIELD F37 ACIS-I NONE 5.00 14:32:08.16 +35:41:51.19 NOAO FIELD F12 ACIS-I NONE 5.00 14:32:59.26 +34:16:18.10 NOAO FIELD F33 ACIS-I NONE 5.00 14:32:59.26 +34:40:44.70 NOAO FIELD F52 ACIS-I NONE 5.00 14:32:59.26 +35:05:11.29 NOAO FIELD F6 ACIS-I NONE 5.00 14:32:59.26 +35:29:37.89 NOAO FIELD F47 ACIS-I NONE 5.00 14:33:51.34 +34:28:31.40 NOAO FIELD F53 ACIS-I NONE 5.00 14:33:51.34 +34:52:57.99 NOAO FIELD F7 ACIS-I NONE 5.00 14:33:51.34 +35:17:24.59 NOAO FIELD F48 ACIS-I NONE 5.00 14:33:51.34 +35:41:51.19 NOAO FIELD F23 ACIS-I NONE 5.00 14:34:42.44 +34:16:18.10 NOAO FIELD F44 ACIS-I NONE 5.00 14:34:42.44 +34:40:44.70 NOAO FIELD F63 ACIS-I NONE 5.00 14:34:42.44 +35:05:11.29 NOAO FIELD F17 ACIS-I NONE 5.00 14:34:42.44 +35:29:37.89 NOAO FIELD F36 ACIS-I NONE 5.00 14:35:34.52 +34:28:31.40 NOAO FIELD F42 ACIS-I NONE 5.00 14:35:34.52 +34:52:57.99 NOAO FIELD F61 ACIS-I NONE 5.00 14:35:34.52 +35:17:24.59 NOAO FIELD F59 ACIS-I NONE 5.00 14:35:34.52 +35:41:51.19 NOAO FIELD F34 ACIS-I NONE 5.00 14:36:25.62 +34:16:18.10 NOAO FIELD F55 ACIS-I NONE 5.00 14:36:25.62 +34:40:44.70 NOAO FIELD F9 ACIS-I NONE 5.00 14:36:25.62 +35:05:11.29 NOAO FIELD F28 ACIS-I NONE 5.00 14:36:25.62 +35:29:37.89 NOAO FIELD F25 ACIS-I NONE 5.00 14:37:17.70 +34:28:31.40 NOAO FIELD F31 ACIS-I NONE 5.00 14:37:17.70 +34:52:57.99 NOAO FIELD F50 ACIS-I NONE 5.00 14:37:17.70 +35:17:24.59 NOAO FIELD F3 ACIS-I NONE 5.00 14:37:17.70 +35:41:51.19 NOAO FIELD F45 ACIS-I NONE 5.00 14:38:08.80 +34:16:18.10 NOAO FIELD F66 ACIS-I NONE 5.00 14:38:08.80 +34:40:44.70 NOAO FIELD F20 ACIS-I NONE 5.00 14:38:08.80 +35:05:11.29 NOAO FIELD F39 ACIS-I NONE 5.00 14:38:08.80 +35:29:37.89 NOAO FIELD F14 ACIS-I NONE 5.00 14:39:00.88 +35:41:51.19 NOAO FIELD F56 ACIS-I NONE 5.00

The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA. Email: cxchelp@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2024. All rights reserved.

Cycle 4 Proposal Abstracts and Targets