XSgabs

class sherpa.astro.xspec.XSgabs(name='gabs')

Bases: sherpa.astro.xspec.XSMultiplicativeModel

The XSPEC gabs model: gaussian absorption line.

The model is described at [1].

Note

Deprecated in Sherpa 4.10.0

The Tau parameter has been renamed Strength to match the XSPEC definition. The name Tau can still be used to access the parameter, but this name will be removed in a future release.

LineE

The line energy, in keV.

Sigma

The line width (sigma), in keV.

Strength

The line depth. The optical depth at the line center is Strength / (sqrt(2 pi) * Sigma).

References

[1]	https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelGabs.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)

calc(pars, xlo, *args, **kwargs)

get_center()

guess(dep, *args, **kwargs)

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)

reset()

set_center(*args, **kwargs)

startup()

Called before a model may be evaluated multiple times.

See also

teardown()

teardown()

Called after a model may be evaluated multiple times.

See also

setup()