Last modified: December 2019

URL: https://cxc.cfa.harvard.edu/sherpa/ahelp/xscph.html
AHELP for CIAO 4.12 Sherpa v1

xscph

Context: models

Synopsis

The XSPEC cph model: Cooling + heating model for cool core clusters

Syntax

xscph

The xscph model is an additive model component.

Description

The model is described at [1] .


Example

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

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

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.peakT    thawed          2.2          0.1          100        keV
   mdl.Abund    frozen            1            0         1000           
   mdl.Redshift frozen          0.1        1e-06           50           
   mdl.switch   frozen            1            0            2           
   mdl.norm     thawed            1            0        1e+24           

ATTRIBUTES

The attributes for this object are:

peakT

The peak temperature, in keV.

Abund

The abundance, relative to Solar.

Redshift

The redshift.

switch

If 0 calculate, if 1 interpolate, if 2 use AtomDB data.

norm

The mass accretion rate, in solar mass per year.

New in CIAO 4.12

The xscph model (added in XSPEC 12.10.1) is new in CIAO 4.12

References

XSPEC version

CIAO 4.12 comes with support for version 12.10.1n of the XSPEC models. This can be checked with the following:

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

Bugs

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