Last modified: December 2020

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

xscompbb

Context: models

Synopsis

The XSPEC compbb model: Comptonization, black body.

Syntax

xscompbb

The xscompbb model is an additive model component.

Description

The model is described at [1] .


Example

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

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

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.kT       thawed            1         0.01          100        keV
   mdl.kTe      frozen           50            1          200        keV
   mdl.tau      thawed          0.1            0           10           
   mdl.norm     thawed            1            0        1e+24           

ATTRIBUTES

The attributes for this object are:

Attribute Definition
kT The blackbody temperature, in keV.
kTe The electron temperature of the hot plasma, in keV.
tau The optical depth of the plasma.
norm The model normalization: it is the same definition as used for the xsbbodyrad model.

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.