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 -10 5 mdl.beta thawed -2 -10 10 mdl.tem thawed 300 10 10000 keV mdl.norm thawed 1 0 1e+24
ATTRIBUTES
The attributes for this object are:
| Attribute | Definition |
|---|---|
| alpha | The first powerlaw index. |
| beta | The second powerlaw index. |
| tem | The characteristic energy, in keV. |
| norm | The normalization of the model. |
References
- [1] https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelGrbm.html
XSPEC version
CIAO 4.17 comes with support for version 12.14.0k of the XSPEC models. This can be checked with the following:
% python -c 'from sherpa.astro import xspec; print(xspec.get_xsversion())' 12.14.0k
Bugs
See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.