xsagauss

Context: models

Synopsis

The XSPEC agauss model: gaussian line profile in wavelength space.

Syntax

xsagauss

The xsagauss model is an additive model component.

Description

The model is described at [1] .

Example

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

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

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.LineE    thawed           10            0        1e+06          A
   mdl.Sigma    thawed            1            0        1e+06          A
   mdl.norm     thawed            1            0        1e+24

ATTRIBUTES

The attributes for this object are:

Attribute	Definition
LineE	The line wavelength, in Angstrom.
Sigma	The line width, in Angstrom. A value of zero means a delta function.
norm	The flux in the line, in units of photon/cm^2/s.

References

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