    The XSPEC agnslim model: AGN super-Eddington accretion model

xsagnslim
The xsagnslim model is an additive model component.

The model is described at [1] .

>>> 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

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

See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.

December 2023