xszashift

Context: models

Synopsis

The XSPEC zashift convolution model: redshift an additive model.

Syntax

xszashift

The xszashift model is a convolution model component.

Description

The model is described at [1] .

Example

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

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

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.Redshift frozen            0       -0.999           10

ATTRIBUTES

The attribute for this object is:

Attribute	Definition
Redshift	The redshift.

Notes

Unlike XSPEC, the convolution model is applied directly to the model, or models, rather than using the multiplication symbol.

References

[1] https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelZashift.html

Changes in CIAO

Added in CIAO 4.13

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.