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bexriv: reflected e-folded broken power law, ionized medium

A 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.

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 , 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 e-folding 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 5eV-20keV irradiating flux and is the density of
the reflector; see Done et al. 1992, ApJ 395, 275. |

norm |
photon flux at 1 keV of the cutoff broken power-law only (no
reflection) in the observed frame. |

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