XSvvgnei

class sherpa.astro.xspec.XSvvgnei(name='vvgnei')

Bases: sherpa.astro.xspec.XSAdditiveModel

The XSPEC gnei model: collisional plasma, non-equilibrium, temperature evolution.

The model is described at [1]. The set_xsxset and get_xsxset functions are used to set and query the XSPEC XSET parameters, in particular the keyword “NEIVERS”.

Note

Deprecated in Sherpa 4.10.0

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

kT

The temperature of the plasma, in keV.

H

The H abundance: it should be set to 0 to switch on and 1 to switch off the free-free continuum.

He, Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar,

K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn

The abundance of the element, with respect to Solar.

Tau

The ionization timescale in units of s/cm^3.

meankT

The ionization timescale averaged plasma temperature in keV.

redshift

The redshift of the plasma.

norm

The normalization of the model: see [1] for an explanation of the units.

See also

XSequil, XSgnei, XSvgnei, XSvvnei

References

[1]	(1, 2) https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelGnei.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)
reset()
set_center(\*args, \*\*kwargs)
startup()
teardown()

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)

reset()

set_center(*args, **kwargs)

startup()

teardown()