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            pexrav:  reflected powerlaw, neutral medium

Exponentially cut off power law spectrum reflected from neutral material  (Magdziarz & Zdziarski 1995, MNRAS, 273, 837). The output spectrum is the sum of the cut-off power law and the reflection component. The reflection component alone can be obtained for rel_refl < 0. Then the actual reflection normalization is |rel_refl|. Note that you need to change then the limits of rel_refl excluding zero (as then the direct component appears). If Ec = 0 there is no cutoff in the power law. The metal and iron abundance are variable with respect to those defined by the command abund. The opacities are from Balucinska & McCammon (ApJ 400, 699 and 1994, private communication). H and He are assumed to be fully ionized. Send questions or comments to aaz@camk.edu.pl .

 

par1

Gamma, first power law photon index, N_E proportional to E^-Gamma

par2

Ec, cutoff energy (keV) (if E_c = 0 there is no cutoff)

par3

relrefl, reflection scaling factor (0, no reflected component < relrefl < 1 for isotropic source above disk)

par4

redshift, z

par5

abundance of elements heavier than He relative to the solar abundances

par6

iron abundance relative to that defined by abund

par7

cosine of inclination angle

norm

photon flux at 1 keV (photons keV–1cm-2 s-1) of the cutoff broken power-law only (no reflection) in the observed frame.


 

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Next: Pexriv Up: Additive Model Components Previous: Pegpwrlw