XSsirf

class sherpa.astro.xspec.XSsirf(name='sirf')[source] [edit on github]

Bases: sherpa.astro.xspec.XSAdditiveModel

The XSPEC sirf model: self-irradiated funnel.

The model is described at [1].

tin

The inner temperature (at the inner, inside-the-funnel photosphere), in keV.

rin

The inner (inner, inside-the-fulle photosphere) radius in “spherisation radius” units (see [1] for details).

rout

The outer photosphere radius in “spherisation radius” units

theta

The half-opening angle of the cone, in degrees.

incl

The inclination angle of the funnel, in degrees. Affects mainly self-occultation and relativistic boost effects.

valpha

The velocity law exponent.

gamma

The adiabatic index. It affects the inner, hotter parts of the flow, therefore we set is to 4/3 by default.

mdot

The mass ejection rate in Eddington (critical) units.

irrad

The number of iterations for irradiation.

norm

The normalization of the model.

References

[1](1, 2) https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelSirf.html

Attributes Summary

thawedparhardmaxes
thawedparhardmins
thawedparmaxes
thawedparmins
thawedpars
version_enabled

Methods Summary

apply(outer, *otherargs, **otherkwargs)
calc(pars, xlo, *args, **kwargs)
get_center()
guess(dep, *args, **kwargs) Set an initial guess for the parameter values.
regrid(*arrays)
reset()
set_center(*args, **kwargs)
startup() Called before a model may be evaluated multiple times.
teardown() Called after a model may be evaluated multiple times.

Attributes Documentation

thawedparhardmaxes
thawedparhardmins
thawedparmaxes
thawedparmins
thawedpars
version_enabled = True

Methods Documentation

apply(outer, *otherargs, **otherkwargs) [edit on github]
calc(pars, xlo, *args, **kwargs) [edit on github]
get_center() [edit on github]
guess(dep, *args, **kwargs) [edit on github]

Set an initial guess for the parameter values.

Attempt to set the parameter values, and ranges, for the model to match the data values. This is intended as a rough guess, so it is expected that the model is only evaluated a small number of times, if at all.

regrid(*arrays) [edit on github]
reset() [edit on github]
set_center(*args, **kwargs) [edit on github]
startup() [edit on github]

Called before a model may be evaluated multiple times.

See also

teardown()

teardown() [edit on github]

Called after a model may be evaluated multiple times.

See also

setup()