pexrav

Exponentially cut off power law spectrum reflected from neutral material (Magdziarz & Zdziarski MNRAS, 273, 837; 1995). 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 , there is no cutoff in the power law. The metal and iron abundance are variable with respect to those of Anders and Ebihara (1982; used by Morrison and McCammon 1983). The opacities are of Balucinska & McCammon (ApJ 400, 699 and 1994, private communication). As expected in AGNs, H and He are assumed to be fully ionized. Send questions or comments to aaz@camk.edu.pl.

par1	 = 	 , power law photon index,    prop. to   

par2	 = 	 , the cutoff energy in keV (if    there is no cutoff;

        	one needs to change the lower limit for that)

par3	 = 	rel_refl, scaling factor for reflection; if <0, no direct component

        	(rel_refl=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 the solar iron abundance (7.52)

par7	 = 	cosine of inclination angle

K   	 = 	photon flux at 1 keV of the power-law only in the observed frame.