Synopsis
The XSPEC dust model: dust scattering.
Syntax
xsdust The xsdust model is a multiplicative model component.
Description
The model is described at [1] .
Example
>>> create_model_component("xsdust", "mdl")
>>> print(mdl)Create a component of the xsdust model and display its default parameters. The output is:
mdl Param Type Value Min Max Units ----- ---- ----- --- --- ----- mdl.Frac frozen 0.066 0 1 mdl.Halosz frozen 2 0 100000
ATTRIBUTES
The attributes for this object are:
| Attribute | Definition |
|---|---|
| Frac | The scattering fraction at 1 keV. |
| Halosz | The size of the halo at 1 keV in units of the detector beamsize. |
References
- [1] https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelDust.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.