load_xstable_model

Context: modeling

Synopsis

Load a XSPEC table model.

Syntax

load_xstable_model(modelname, filename)

modelname - str
filename - str

Description

Create an additive ( atable , [1] ) or multiplicative ( mtable , [2] ) XSPEC table model component. These models may have multiple model parameters.

Example

Load in the XSPEC table model from the file 'bbrefl_1xsolar.fits' and create a model component labelled 'xtbl', which is then used in a source expression:

>>> load_xstable_model('xtbl', 'bbrefl_1xsolar.fits')
>>> set_source(xsphabs.gal * xtbl)
>>> print(xtbl)

PARAMETERS

The parameters for this function are:

Parameter	Definition
modelname	The identifier for this model component.
filename	The name of the FITS file containing the data, which should match the XSPEC table model definition [3] .

Notes

NASA's HEASARC site contains a link to community-provided XSPEC table models [4] .

References

[1] http://heasarc.gsfc.nasa.gov/docs/xanadu/xspec/manual/XSmodelAtable.html
[2] http://heasarc.gsfc.nasa.gov/docs/xanadu/xspec/manual/XSmodelMtable.html
[3] http://heasarc.gsfc.nasa.gov/docs/heasarc/ofwg/docs/general/ogip_92_009/ogip_92_009.html
[4] https://heasarc.gsfc.nasa.gov/xanadu/xspec/newmodels.html

XSPEC version

CIAO 4.13 comes with support for version 12.10.1s of the XSPEC models. This can be checked with the following:

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

Bugs

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