Last modified: December 2021

URL: https://cxc.cfa.harvard.edu/sherpa/ahelp/xszxipab.html
AHELP for CIAO 4.14 Sherpa

xszxipab

Context: models

Synopsis

The XSPEC zxipab model: power-law distribution of ionized absorbers.

Syntax

xszxipab

The xszxipab model is a multiplicative model component.

Description

The model is described at [1] .


Example

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

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

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.nHmin    thawed         0.01        1e-07        1e+06      10^22
   mdl.nHmax    thawed           10        1e-07        1e+06      10^22
   mdl.beta     thawed            0          -10           10           
   mdl.log_xi   thawed            3           -3            6           
   mdl.redshift frozen            0            0           10           

ATTRIBUTES

The attributes for this object are:

Attribute Definition
nHmin The minimum equivalent hydrogen column (in units of 10^22 atoms/cm^2).
nHmax The maximum equivalent hydrogen column (in units of 10^22 atoms/cm^2).
beta The power law index for the covering fraction.

References

Changes in CIAO

New in CIAO 4.14

The xszxipab model (added in XSPEC 12.12.0) is new in CIAO 4.14.

XSPEC version

CIAO 4.14 comes with support for version 12.12.0 of the XSPEC models. This can be checked with the following:

% python -c 'from sherpa.astro import xspec;
print(xspec.get_xsversion())'
12.12.0

Bugs

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

See Also

models
xspwab