Last modified: December 2018

URL: http://cxc.harvard.edu/sherpa/ahelp/xsdiskir.html
AHELP for CIAO 4.11 Sherpa v1

xsdiskir

Context: models

Synopsis

The XSPEC diskir model: Irradiated inner and outer disk.

Syntax

xsdiskir

The xsdiskir model is an additive model component.

Description

The model is described at [1] .

Deprecated in Sherpa 4.10.0

The LcLd parameter has been renamed LcovrLd to match the XSPEC definition. The name LcLd can still be used to access the parameter, but this name will be removed in a future release.


Example

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

Create a component of the xsdiskir model and display its default parameters. The output is:

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.kT_disk  thawed            1         0.01            5        keV
   mdl.Gamma    thawed          1.7        1.001            5           
   mdl.kT_e     thawed          100            5         1000        keV
   mdl.LcovrLd  thawed          0.1            0           10           
   mdl.fin      frozen          0.1            0            1           
   mdl.rirr     thawed          1.2       1.0001           10           
   mdl.fout     thawed       0.0001            0          0.1           
   mdl.logrout  thawed            5            3            7           
   mdl.norm     thawed            1            0        1e+24           

ATTRIBUTES

The attributes for this object are:

kT_disk

The temperature of the innermost part of the unilluminated disk, in keV.

Gamma

The asymptotic power-law photon index.

kT_e

The electron temperature (high-energy rollover) in keV.

LcovrLd

The ratio of the luminosity in the Compton tail to that of the unilluminated disk.

fin

The fraction of luminosity in the Compton tail which is thermalized in the inner disk. Generally fix at 0.1 as appropriate for an albedo of 0.3 and solid angle of 0.3.

rirr

The radius of the Compton illuminated disk in terms of the inner disk radius.

fout

The fraction of bolometric flux which is thermalized in the outer disk.

logrout

The log (base 10) of the outer disk radius in terms of the inner disk radius.

norm

The model normalization: it is the same definition as used for the XSdiskbb model.

References

XSPEC version

CIAO 4.11 comes with support for version 12.10.0e of the XSPEC models. This can be checked with the following:

% python -c 'from sherpa.astro import xspec;
print(xspec.get_xsversion())'
12.10.0e

Bugs

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