xsexpfac

Context: models

Synopsis

The XSPEC expfac model: exponential modification.

Syntax

xsexpfac

The xsexpfac model is a multiplicative model component.

Description

The model is described at [1] .

Example

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

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

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.Ampl     thawed            1            0        1e+06           
   mdl.Factor   thawed            1            0        1e+06           
   mdl.StartE   frozen          0.5            0        1e+06        keV

ATTRIBUTES

The attributes for this object are:

Attribute	Definition
Ampl	The amplitude of the effect.
Factor	The exponential factor.
StartE	The start energy of the modification, in keV.

References

[1]

XSPEC version

CIAO 4.18 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.

/ sherpa4.18 / ahelp / xsexpfac.html