Broken power-law spectrum multiplied
by exponential high-energy cutoff, exp(-E/Ec), and
reflected from ionized material. See Magdziarz & Zdziarski 1995, MNRAS,
273, 837 for details. Ionization and opacities of the reflecting medium is
computed as in the absori model. The output spectrum is the sum of an e-folded
broken power law and the reflection component. The reflection component alone
can be obtained for . Then the actual reflection
normalization is
. Note that you need to change
then the limits of
excluding zero (as then the
direct component appears). If Ec = 0, there is no
cutoff in the power law. The metal and iron abundances are variable with
respect to those set by the command abund.
The core of this model is a Greens' function integration with one numerical integral performed for each model energy. The numerical integration is done using an adaptive method which continues until a given estimated fractional precision is reached. The precision can be changed by setting BEXRIV_PRECISION eg xset BEXRIV_PRECISION 0.05. The default precision is 0.01 (ie 1%).
par1 |
|
par2 |
Ebreak, break energy (keV) |
par3 |
|
par4 |
Ec, the e-folding energy in keV (if Ec = 0 there is no cutoff) |
par5 |
relrefl, reflection scaling factor (1 for isotropic source above disk) |
par6 |
redshift, z |
par7 |
abundance of elements heavier than He relative to the solar abundances |
par8 |
iron abundance relative to the above |
par9 |
cosine of inclination angle |
par10 |
disk temperature, K |
par11 |
disk
ionization parameter, |
norm |
photon flux at 1 keV of the cutoff broken power-law only (no reflection) in the observed frame.} |