XSvvapec¶
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class
sherpa.astro.xspec.
XSvvapec
(name='vvapec')[source]¶ Bases:
sherpa.astro.xspec.XSAdditiveModel
The XSPEC vvapec model: APEC emission spectrum.
The model is described at [1], with
XSapec
describing how it is implemented in Sherpa.-
kT
¶ The temperature of the plasma, in keV.
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H, He, Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar,
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K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn
The abundance of the element in solar units.
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Redshift
¶ The redshift of the plasma.
References
[1] (1, 2) https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelApec.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
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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)¶
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calc
(pars, xlo, *args, **kwargs)¶
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get_center
()¶
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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.
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regrid
(*arrays)¶
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reset
()¶
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set_center
(*args, **kwargs)¶
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startup
()¶ Called before a model may be evaluated multiple times.
See also
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teardown
()¶ Called after a model may be evaluated multiple times.
See also
setup()
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