Last modified: December 2021

URL: https://cxc.cfa.harvard.edu/sherpa/ahelp/xsagnslim.html
AHELP for CIAO 4.14 Sherpa

xsagnslim

Context: models

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

Changes in CIAO

New in CIAO 4.14

The xsagnslim model (added in XSPEC 12.11.0) is new in CIAO 4.14.

XSPEC version

CIAO 4.14 comes with support for version 12.12.0 of the XSPEC models. This can be checked with the following:

% python -c 'from sherpa.astro import xspec;
print(xspec.get_xsversion())'
12.12.0

Bugs

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

See Also

models
xsagnsed