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Mewe-Kaastra-Liedahl thermal plasma (1995).
XSpec model.
An emission spectrum from hot diffuse gas based on the model
calculations of Mewe and Kaastra with Fe L calculations by
Liedahl. The model includes line emissions from several elements. The
switch parameter determines whether the mekal code will be run to
calculate the model spectrum for each temperature, or whether the model
spectrum will be interpolated from a pre-calculated table; the former
is slower but more accurate.
xsmekal Parameters
| 1 | kT | plasma temperature
in keV |
| 2 | nH | hydrogen density
in cm^-3 |
| 3 | Abund | metal
abundances (He fixed at cosmic). The elements included are C, N, O,
Ne, Na, Mg, Al, Si, S, Ar, Ca, Fe, Ni. Abundances are set by the
xspecabundan command. |
| 4 | Redshift | redshift,
z |
| 5 | Switch | 0 =
calculate, 1 = interpolate |
| 6 | norm | 10^-14 / (4 pi
(D_A*(1+z))^2) Int n_e n_H dV, where D_A is the angular size
distance to the source (cm), n_e is the electron density (cm^-3),
and n_H is the hydrogen density (cm^-3) |
The references for this model are:
-
Mewe, R., Gronenschild, E.H.B.M., and van den Oord, G.H.J. 1985,
A&AS, 62, 197
-
Mewe, R., Lemen, J.R., and van den Oord, G.H.J. 1986, A&AS, 65,
511
-
Kaastra, J.S. 1992, An X-Ray Spectral Code for Optically Thin
Plasmas (Internal SRON-Leiden Report, updated version 2.0)
-
Liedahl, D.A., Osterheld, A.L., and Goldstein, W.H. 1995, ApJL, 438,
115
Similar credit may also be given for the adopted ionization balance:
-
Arnaud, M., and Rothenflug, M. 1985, A&AS, 60, 425
-
Arnaud, M., and Raymond, J, 1992, ApJ, 398, 394
This information is taken from the XSpec User's Guide. Version 11.3.1 of the XSpec
models is supplied with CIAO 3.2.
For a list of known bugs and issues with the XSPEC models, please visit the XSPEC bugs page.
- sherpa
-
atten,
bbody,
bbodyfreq,
beta1d,
beta2d,
box1d,
box2d,
bpl1d,
const1d,
const2d,
cos,
delta1d,
delta2d,
dered,
devaucouleurs,
edge,
erf,
erfc,
farf,
farf2d,
fpsf,
fpsf1d,
frmf,
gauss1d,
gauss2d,
gridmodel,
hubble,
jdpileup,
linebroad,
lorentz1d,
lorentz2d,
models,
nbeta,
ngauss1d,
poisson,
polynom1d,
polynom2d,
powlaw1d,
ptsrc1d,
ptsrc2d,
rsp,
rsp2d,
schechter,
shexp,
shexp10,
shlog10,
shloge,
sin,
sqrt,
stephi1d,
steplo1d,
tan,
tpsf,
tpsf1d,
usermodel,
xs,
xsabsori,
xsacisabs,
xsapec,
xsbapec,
xsbbody,
xsbbodyrad,
xsbexrav,
xsbexriv,
xsbknpower,
xsbmc,
xsbremss,
xsbvapec,
xsc6mekl,
xsc6pmekl,
xsc6pvmkl,
xsc6vmekl,
xscabs,
xscemekl,
xscevmkl,
xscflow,
xscompbb,
xscompls,
xscompst,
xscomptt,
xsconstant,
xscutoffpl,
xscyclabs,
xsdisk,
xsdiskbb,
xsdiskline,
xsdiskm,
xsdisko,
xsdiskpn,
xsdust,
xsedge,
xsequil,
xsexpabs,
xsexpdec,
xsexpfac,
xsgabs,
xsgaussian,
xsgnei,
xsgrad,
xsgrbm,
xshighecut,
xshrefl,
xslaor,
xslorentz,
xsmeka,
xsmkcflow,
xsnei,
xsnotch,
xsnpshock,
xsnsa,
xsnteea,
xspcfabs,
xspegpwrlw,
xspexrav,
xspexriv,
xsphabs,
xsplabs,
xsplcabs,
xsposm,
xspowerlaw,
xspshock,
xspwab,
xsraymond,
xsredden,
xsredge,
xsrefsch,
xssedov,
xssmedge,
xsspline,
xssrcut,
xssresc,
xssssice,
xsstep,
xstbabs,
xstbgrain,
xstbvarabs,
xsuvred,
xsvapec,
xsvarabs,
xsvbremss,
xsvequil,
xsvgnei,
xsvmcflow,
xsvmeka,
xsvmekal,
xsvnei,
xsvnpshock,
xsvphabs,
xsvpshock,
xsvraymond,
xsvsedov,
xswabs,
xswndabs,
xsxion,
xszbbody,
xszbremss,
xszedge,
xszgauss,
xszhighect,
xszpcfabs,
xszphabs,
xszpowerlw,
xsztbabs,
xszvarabs,
xszvfeabs,
xszvphabs,
xszwabs,
xszwndabs
- slang
-
usermodel
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