Last modified: December 2018

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

xszxipcf

Context: models

Synopsis

The XSPEC zxipcf model: partial covering absorption by partially ionized material.

Syntax

xszxipcf

The xszxipcf model is a multiplivative model component.

Description

The model is described at [1] .

Deprecated in Sherpa 4.10.0

The logxi parameter has been renamed log_xi to match the XSPEC definition. The name logxi can still be used to access the parameter, but this name will be removed in a future release.


Example

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

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

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.Nh       thawed           10         0.05          500 10^22 atoms / cm^2
   mdl.log_xi   thawed            3           -3            6           
   mdl.CvrFract thawed          0.5            0            1           
   mdl.redshift frozen            0       -0.999           10           

ATTRIBUTES

The attributes for this object are:

nH

The column density, in units of 10^22 cm^2.

log_xi

The log of xi: see [1] for more details.

CvrFract

The covering fraction.

redshift

The redshift of the source.

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.