|  | 
 
Photoelectric absorption (Morrison and McCammon).
XSpec model.
 
A photoelectric absorption using Wisconsin (Morrison and McCammon, ApJ
270, 119) cross-sections.
 
where sigma(E) is the photo-electric cross-section, NOT including
Thomson scattering.
 xswabs Parameters
 
  | 1 | nH | equivalent
  hydrogen column (in units of 10^22 atoms/cm^2) |  
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,
xsmekal,
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,
xswndabs,
xsxion,
xszbbody,
xszbremss,
xszedge,
xszgauss,
xszhighect,
xszpcfabs,
xszphabs,
xszpowerlw,
xsztbabs,
xszvarabs,
xszvfeabs,
xszvphabs,
xszwabs,
xszwndabs
slang
usermodel
 |