Synopsis
The XSPEC disko model: accretion disk, inner, radiation pressure viscosity.
Syntax
xsdisko The xsdisko model is an additive model component.
Description
The model is described at [1] .
Example
>>> create_model_component("xsdisko", "mdl") >>> print(mdl)
Create a component of the xsdisko model and display its default parameters. The output is:
mdl Param Type Value Min Max Units ----- ---- ----- --- --- ----- mdl.accrate thawed 1 0.001 9 mdl.NSmass frozen 1.4 0.4 10 Msun mdl.Rinn frozen 1.03 1.01 1.03 mdl.alpha frozen 1 0.01 10 mdl.norm thawed 1 0 1e+24
ATTRIBUTES
The attributes for this object are:
NSmass
The central mass, in solar mass units.
Rinn
The inner disk radius in gravitational units (three Schwarzschild radii).
alpha
The viscosity.
norm
The normalization of the model: see [1] for details.
References
- [1] https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelDisko.html
XSPEC version
CIAO 4.11 comes with support for version 12.10.0e of the XSPEC models. This can be checked with the following:
% python -c 'from sherpa.astro import xspec; print(xspec.get_xsversion())' 12.10.0e
Bugs
See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.