Last modified: December 2019

URL: https://cxc.cfa.harvard.edu/sherpa/ahelp/xsagnsed.html
AHELP for CIAO 4.12 Sherpa v1

xsagnsed

Context: models

Synopsis

The XSPEC agnsed model: AGN SED model

Syntax

xsagnsed

The xsagnsed model is an additive model component.

Description

The model is described at [1] .


Example

>>> create_model_component("xsagnsed", "mdl")
>>> print(mdl)

Create a component of the xsagnsed 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            2           
   mdl.astar    frozen            0           -1        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          1.7          1.3            3    (_calc)
   mdl.Gamma_warm thawed          2.7            2            5    (_disk)
   mdl.R_hot    thawed           10            6          500         Rg
   mdl.R_warm   thawed           20            6          500         Rg
   mdl.logrout  frozen           -1           -3            7   (_selfg)
   mdl.Htmax    frozen          100            6          200         Rg
   mdl.reprocess frozen            1            0            1   0off/1on
   mdl.redshift frozen            0            0            1           
   mdl.norm     thawed            1            0        1e+24           

ATTRIBUTES

The attributes for this object are:

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. If negative, the code will use the value calculated via eq.(2) of KD18 (see [1] ).

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] ).

Htmax

The upper limit of the scale height for the hot Comptonisation component in Rg. If smaller than R_hot, the hot Comptonisation region is a sphere of radius Htmax by keeping Ldiss_hot determined by R_hot via eq.(2) of KD18 (see [1] ).

reprocess

If this parameter is 0, reprocessing is not considered. If it is 1, reprocessing is included.

redshift

The redshift.

norm

The normalization of the model.

New in CIAO 4.12

The xsagnsed model (added in XSPEC 12.10.1) is new in CIAO 4.12

References

XSPEC version

CIAO 4.12 comes with support for version 12.10.1n of the XSPEC models. This can be checked with the following:

% python -c 'from sherpa.astro import xspec;
print(xspec.get_xsversion())'
12.10.1n

Bugs

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