Synopsis
The XSPEC TBfeo model: ISM grain absorption.
Syntax
xstbfeo The xstbfeo model is a multiplicative model component.
Description
The model is described at [1] .
Example
>>> create_model_component("xstbfeo", "mdl")
>>> print(mdl)Create a component of the xstbfeo model and display its default parameters. The output is:
mdl Param Type Value Min Max Units ----- ---- ----- --- --- ----- mdl.nH thawed 1 0 1e+06 10^22 mdl.O thawed 1 -1e+38 1e+38 mdl.Fe thawed 1 -1e+38 1e+38 mdl.redshift frozen 0 -1 10
ATTRIBUTES
The attributes for this object are:
| Attribute | Definition |
|---|---|
| nH | The equivalent hydrogen column (in units of 10^22 atoms/cm^2). |
| O | Oxygen abundance relative to Solar. |
| Fe | Iron abundance relative to Solar. |
| redshift | The redshift of the absorber. |
Notes
The `set_xsabund` function changes the relative abundances of the elements, in particular the "wilm" setting.
References
- [1] https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelTbabs.html
XSPEC version
CIAO 4.16 comes with support for version 12.13.1e of the XSPEC models. This can be checked with the following:
% python -c 'from sherpa.astro import xspec; print(xspec.get_xsversion())' 12.13.1e
Bugs
See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.