bexriv: reflected efolded broken power law, ionized medium
A broken powerlaw spectrum multiplied by exponential highenergy
cutoff, exp(E/Ec), and reflected from ionized material. See Magdziarz
& Zdziarski (1995)
for details.
The output spectrum is the sum of an efolded 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 , there is no cutoff in the power law. The metal
and iron abundance 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 
, first power law photon index 
par2 
, break energy (keV) 
par3 
, second power law photon index 
par4 
, the efolding energy in keV (if there is no
cutoff) 
par5 
, reflection scaling factor (1 for isotropic source
above disk) 
par6 
, redshift 
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,
, where
is the 5eV20keV irradiating flux and is the density of
the reflector; see Done et al. (1992). 
norm 
photon flux at 1 keV of the cutoff broken powerlaw only (no
reflection) in the observed frame. 
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Last modified: Tuesday, 28May2024 10:09:22 EDT
