Last modified: December 2018

URL: http://cxc.harvard.edu/sherpa/ahelp/xsexpdec.html
AHELP for CIAO 4.11 Sherpa v1

xsexpdec

Context: models

Synopsis

The XSPEC expdec model: exponential decay.

Syntax

xsexpdec

The xsexpdec model is an additive model component.

Description

The model is described at [1] .


Example

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

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

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.factor   thawed            1            0          100           
   mdl.norm     thawed            1            0        1e+24           

ATTRIBUTES

The attributes for this object are:

factor

The exponential factor.

norm

The normalization of the model.

References

XSPEC version

CIAO 4.11 comes with support for version 12.10.0e of the XSPEC models. This can be checked with the following:

% python -c 'from sherpa.astro import xspec;
print(xspec.get_xsversion())'
12.10.0e

Bugs

See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.