SUMMARY OF SEQUENCE NUMBER 400008

SUMMARY OF SEQUENCE NUMBER 400008

Title: BLACK HOLE EVENT HORIZONS

Observer: MURRAY

Subject Category: BH and NS Binaries

Seq: 400008 ObsId: 00095

Long-term Plan bin: 29-Feb-2000

ABSTRACT

Comparisons of the luminosities of Black Hole (BH) and Neutron Star X-ray Nova (XN) provide the first direct observational evidence that black holes have event horizons. Central to the interpretation of this evidence is the understanding of the accretion flow in X-ray Nova as Advection Dominated Accretion Flows (ADAFs) when the systems are "quiescent". These observations will allow qualitative improvement in our ability to test the ADAF (or any other) model by providing the second high-quality spectrum of a quiescent BHXN, and the first high-quality spectrum of a short-period BHXN.

TARGET SUMMARY

TARGET NAME RADEC TIME SI GRAT TYPE TC ROLL PRE PHASE MULTI PRI
A0620-00
95.685417
-0.345750
44.00000
ACIS-S
NONE
GTO
no
no
no
no
no
5

IMAGES

(NOTE: RASS images currently only available for targets LTS scheduled on or after Apr-09-2000)

Roll/Visibility

PARAMETERS

Obscat Parameters