Last modified: December 2020

URL: https://cxc.cfa.harvard.edu/sherpa/ahelp/xsabsori.html
AHELP for CIAO 4.13 Sherpa v1

xsabsori

Context: models

Synopsis

The XSPEC absori model: ionized absorber.

Syntax

xsabsori

The xsabsori model is a multiplicative model component.

Description

The model is described at [1] .


Example

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

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

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.PhoIndex frozen            2            0            4           
   mdl.nH       thawed            1            0          100 10^22 atoms / cm^2
   mdl.Temp_abs frozen        30000        10000        1e+06          K
   mdl.xi       thawed            1            0         1000           
   mdl.redshift frozen            0       -0.999           10           
   mdl.Fe_abund frozen            1            0        1e+06           

ATTRIBUTES

The attributes for this object are:

Attribute Definition
PhoIndex The power-law photon index.
nH The Hydrogen column, in units of 10^22 cm^-2.
Temp_abs The absorber temperature, in K.
xi The absorber ionization state. See [1] for more details.
redshift The redshift of the absorber.
Fe_abund The iron abundance with respect to solar, as set by the set_xsabund function.

References

XSPEC version

CIAO 4.13 comes with support for version 12.10.1s of the XSPEC models. This can be checked with the following:

% python -c 'from sherpa.astro import xspec;
print(xspec.get_xsversion())'
12.10.1s

Bugs

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