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Exponentially cutoff power law reflected from ionized matter.
XSpec model.
Exponentially cutoff power law spectrum reflected from ionized
material. See Magdziarz and Zdziarski (MNRAS, 273, 837; 1995) for
details. Ionization and opacities of the reflecting medium are
computed as in xsabsori. The output spectrum is the sum of an
e-folded power law and the reflection component.
The reflection component alone can be obtained for relRefl
< 0. Then the actual reflection normalization is |relRefl|. Note
that you then need to change the limits of relRefl to exclude zero (as
then the direct component appears). If foldE = 0 there is no cutoff in
the power law.
The metal and iron abundance are variable with respect
to those defined by the xspecabundan command.
xspexriv Parameters
| 1 | PhoIndx | power law
photon index, N_E prop. to E^(-PhoIndx) |
| 2 | foldE | the e-folding
energy in keV (if foldE=0, there is no cutoff; change the lower
limit for that) |
| 3 | relRefl | reflection
scaling factor; if < 0, there is no direct component; relRefl=1
for isotropic source above disk |
| 4 | Redshift | redshift,
z |
| 5 | abund | abundance of
elements heavier than He relative to that defined by
xspecabundan |
| 6 | FeAbund | iron
abundance relative to that defined by xspecabundan |
| 7 | cosIncl | cosine of
inclination angle |
| 8 | Tdisk | disk
temperature in K |
| 9 | xi | disk ionization
parameter, xi = 4 pi F_ion/n, where F_ion is the 5 eV - 20 keV
irradiating flux and n is the density of the reflector; see Done et
al., 1992, ApJ, 395, 275 |
| 10 | norm | photon flux at 1
keV (photons/keV/cm^2/s) of the power law only in the observed
frame |
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.
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