Synopsis
The XSPEC agnslim model: AGN super-Eddington accretion model
Syntax
xsagnslim The xsagnslim model is an additive model component.
Description
The model is described at [1] .
Example
>>> create_model_component("xsagnslim", "mdl") >>> print(mdl)
Create a component of the xsagnslim model and display its default parameters. The output is:
mdl Param Type Value Min Max Units ----- ---- ----- --- --- ----- mdl.mass frozen 1e+07 1 1e+10 solar mdl.dist frozen 100 0.01 1e+09 Mpc mdl.logmdot thawed 1 -10 3 mdl.astar frozen 0 0 0.998 mdl.cosi frozen 0.5 0.05 1 mdl.kTe_hot frozen 100 10 300 keV(-pl) mdl.kTe_warm thawed 0.2 0.1 0.5 keV(-sc) mdl.Gamma_hot thawed 2.4 1.3 3 mdl.Gamma_warm thawed 3 2 10 (-disk) mdl.R_hot thawed 10 2 500 Rg mdl.R_warm thawed 20 2 500 Rg mdl.logrout frozen -1 -3 7 (-selfg) mdl.rin frozen -1 -1 100 mdl.redshift frozen 0 0 5 mdl.norm thawed 1 0 1e+24
ATTRIBUTES
The attributes for this object are:
Attribute | Definition |
---|---|
mass | The black hole mass, in solar units. |
dist | The comoving (proper) distance, in Mpc. |
logmdot | log of mdot, where mdot = Mdot/Mdot_Edd and eta Mdot_Edd c^2 = L_Edd |
astar | The black hole spin (dimensionless) |
cosi | The cosine of the inclination angle i for the warm Comptonising component and the outer disc. |
kTe_hot | The electron temperature for the hot Comptonisation component in keV. If negative then only the hot Comptonisation component is used. |
kTe_warm | The electron temperature for the warm Comptonisation component in keV. If negative then only the warm Comptonisation component is used. |
Gamma_hot | The spectral index of the hot Comptonisation component. |
Gamma_warm | The spectral index of the warm Comptonisation component. If negative then only the outer disc component is used. |
R_hot | The outer radius of the hot Comptonisation component in Rg. |
R_warm | The outer radius of the warm Comptonisation component in Rg. |
logrout | The log of the outer radius of the disc in units of Rg. If negative, the code will use the self gravity radius as calculated from Laor & Netzer (1989) (see [1] ). |
rin | The inner radius of the disc in Rg. If this parameter is -1 (the default), the model will use the radius calculated from KD19. This must be greater than R_hot for mdot greater than 6 and greater than R_isco for mdot less than 6. |
redshift | The redshift. |
norm | The normalization of the model. This must be fixed at 1. |
References
- [1] https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelAgnslim.html
Changes in CIAO
Changed in CIAO 4.14
The default logmdot parameter value has changed from -1 to 1 to match XSPEC.
XSPEC version
CIAO 4.16 comes with support for version 12.13.1e of the XSPEC models. This can be checked with the following:
% python -c 'from sherpa.astro import xspec; print(xspec.get_xsversion())' 12.13.1e
Bugs
See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.
See Also
- models
- xsagnsed