Last modified: December 2023

URL: https://cxc.cfa.harvard.edu/sherpa/ahelp/xszwabs.html
AHELP for CIAO 4.16 Sherpa

xszwabs

Context: models

Synopsis

The XSPEC zwabs model: photoelectric absorption, Wisconsin cross-sections.

Syntax

xszwabs

The xszwabs model is a multiplicative model component.

Description

The model is described at [1] .


Example

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

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

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.nH       thawed            1            0        1e+06 10^22 atoms / cm^2
   mdl.redshift frozen            0       -0.999           10           

ATTRIBUTES

The attributes for this object are:

Attribute Definition
nH The equivalent hydrogen column (in units of 10^22 atoms/cm^2).
redshift The redshift of the absorber.

References

XSPEC version

CIAO 4.16 comes with support for version 12.13.1e of the XSPEC models. This can be checked with the following:

% python -c 'from sherpa.astro import xspec;
print(xspec.get_xsversion())'
12.13.1e

Bugs

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

See Also

models
xswabs