xsvoigt

Context: models

Synopsis

The XSPEC voigt model: Voigt line profile.

Syntax

xsvoigt

The xsvoigt model is an additive model component.

Description

The model is described at [1] .

Example

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

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

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.LineE    thawed          6.5            0        1e+06        keV
   mdl.Sigma    thawed         0.01            0           20        keV
   mdl.Gamma    thawed         0.01            0           20        keV
   mdl.norm     thawed            1            0        1e+24

ATTRIBUTES

The attributes for this object are:

Attribute	Definition
LineE	The line energy, in keV.
Sigma	The gaussian line width, in keV.
Gamma	The lorentzian FWHM line width, in keV.
norm	The flux in the line, in units of photon/cm^2/s.

References

[1] https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelVoigt.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.