Last modified: December 2018

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

xsedge

Context: models

Synopsis

The XSPEC edge model: absorption edge.

Syntax

xsedge

The xsedge model is a multiplivative model component.

Description

The model is described at [1] .


Example

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

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

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.edgeE    thawed            7            0          100        keV
   mdl.MaxTau   thawed            1            0            5           

ATTRIBUTES

The attributes for this object are:

edgeE

The threshold edge, in keV.

MaxTau

The absorption depth at the threshold.

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.

See Also

models
xssmedge, xszedge