xslaor2

Context: models

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:

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 4.11 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.