XSbexrav¶
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class
sherpa.astro.xspec.
XSbexrav
(name='bexrav')[source] [edit on github]¶ Bases:
sherpa.astro.xspec.XSAdditiveModel
The XSPEC bexrav model: reflected e-folded broken power law, neutral medium.
The model is described at [1].
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Gamma1
¶ The power-law index of the first power-law component.
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breakE
¶ The break energy, in keV.
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Gamma2
¶ The power-law index of the second power-law component.
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foldE
¶ The e-folding energy (Ec) in keV. If zero there is no cut off.
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rel_refl
¶ The reflection scaling parameter (a value of 1 for an isotropic source above the disk).
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cosIncl
¶ The cosine of the inclination angle.
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abund
¶ The abundance of the elements heaver than He relative to their solar abundance, as set by the
set_xsabund
function.
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Fe_abund
¶ The iron abundance relative to the solar abundance, as set by the
set_xsabund
function.
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redshift
¶ The redshift of the source.
See also
Notes
The precision of the numerical integration can be changed by using the
set_xsxset
function to set the value of the BEXRAV_PRECISION keyword, which defines the fractional precision. The default is 0.01 (1%).References
[1] (1, 2) https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelBexrav.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, **kwargs)The class RegriddableModel1D allows the user to evaluate in the requested space then interpolate onto the data space. reset
()set_center
(*args, **kwargs)startup
(cache)Called before a model may be evaluated multiple times. teardown
()Called after a model may be evaluated multiple times. Attributes Documentation
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thawedparhardmaxes
¶
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thawedparhardmins
¶
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thawedparmaxes
¶
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thawedparmins
¶
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thawedpars
¶
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version_enabled
= True¶
Methods Documentation
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apply
(outer, *otherargs, **otherkwargs) [edit on github]¶
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calc
(pars, xlo, *args, **kwargs) [edit on github]¶
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get_center
() [edit on github]¶
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guess
(dep, *args, **kwargs)[source] [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.
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regrid
(*arrays, **kwargs) [edit on github]¶ The class RegriddableModel1D allows the user to evaluate in the requested space then interpolate onto the data space. An optional argument ‘interp’ enables the user to change the interpolation method.
Examples
>>> import numpy as np >>> from sherpa.models.basic import Box1D >>> mybox = Box1D() >>> request_space = np.arange(1, 10, 0.1) >>> regrid_model = mybox.regrid(request_space, interp=linear_interp)
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reset
() [edit on github]¶
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set_center
(*args, **kwargs) [edit on github]¶
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startup
(cache) [edit on github]¶ Called before a model may be evaluated multiple times.
See also
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teardown
() [edit on github]¶ Called after a model may be evaluated multiple times.
See also
setup()
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