Synopsis
The XSPEC vbremss model: thermal bremsstrahlung.
Syntax
xsvbremss The xsvbremss model is an additive model component.
Description
The model is described at [1] .
Deprecated in Sherpa 4.10.0
The heh parameter has been renamed heovrh to match the XSPEC definition. The name heh can still be used to access the parameter, but this name will be removed in a future release.
Example
>>> create_model_component("xsvbremss", "mdl")
>>> print(mdl)Create a component of the xsvbremss model and display its default parameters. The output is:
mdl Param Type Value Min Max Units ----- ---- ----- --- --- ----- mdl.kT thawed 3 0.0001 200 keV mdl.HeovrH thawed 1 0 100 mdl.norm thawed 1 0 1e+24
ATTRIBUTES
The attributes for this object are:
| Attribute | Definition |
|---|---|
| kT | The plasma temperature in keV. |
| HeovrH | The ratio n(He) / n(H). |
| norm | The normalization of the model: see [1] for an explanation of the units. |
References
- [1] https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelBremss.html
XSPEC version
CIAO 4.15 comes with support for version 12.12.1c of the XSPEC models. This can be checked with the following:
% python -c 'from sherpa.astro import xspec; print(xspec.get_xsversion())' 12.12.1c
Bugs
See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.