Last modified: December 2018

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

xsgrbm

Context: models

Synopsis

The XSPEC grbm model: gamma-ray burst continuum.

Syntax

xsgrbm

The xsgrbm model is an additive model component.

Description

The model is described at [1] .

Deprecated in Sherpa 4.10.0

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


Example

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

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

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.alpha    thawed           -1           -3            2           
   mdl.beta     thawed           -2           -5            2           
   mdl.tem      thawed          300           50         1000        keV
   mdl.norm     thawed            1            0        1e+24           

ATTRIBUTES

The attributes for this object are:

alpha

The first powerlaw index.

beta

The second powerlaw index.

tem

The characteristic energy, in keV.

norm

The normalization of the 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.

See Also

models
xsgrbcomp