Synopsis
The XSPEC laor2 model: accretion disk with broken-power law emissivity profile, black hole emission line.
Syntax
xslaor2 The xslaor2 model is an additive model component.
Description
The model is described at [1] .
Deprecated in Sherpa 4.10.0
The ring and routg parameters have been renamed to rin_g and rout_g respectively to match the XSPEC definition. The names ring and routg can still be used to access the parameters, but they will be removed in a future release.
Example
>>> create_model_component("xslaor2", "mdl")
>>> print(mdl)Create a component of the xslaor2 model and display its default parameters. The output is:
mdl Param Type Value Min Max Units ----- ---- ----- --- --- ----- mdl.lineE thawed 6.4 0 100 keV mdl.Index frozen 3 -10 10 mdl.Rin_G frozen 1.235 1.235 400 mdl.Rout_G frozen 400 1.235 400 mdl.Incl frozen 30 0 90 deg mdl.Rbreak frozen 20 1.235 400 mdl.Index1 frozen 3 -10 10 mdl.norm thawed 1 0 1e+24
ATTRIBUTES
The attributes for this object are:
| Attribute | Definition |
|---|---|
| lineE | The rest-frame line energy, in keV. |
| Index | The power law dependence of emissivity (scales as R^-Index). |
| Rin_G | The inner radius, in units of GM/c^2. |
| Rout_G | The outer radius, in units of GM/c^2. |
| Incl | The disk inclination angle, in degrees. A face-on disk has Incl=0. |
| Rbreak | The radius at which the emissivity power-law index changes. |
| Index1 | The emissivity power-law index for r>Rbreak. |
| norm | The flux in the line, in units of photon/cm^2/s. |
References
- [1] https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelLaor2.html
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.