Paolo Coppi's hybrid (thermal/non-thermal) hot
plasma emission model
These three models are based on Paolo Coppi's hybrid thermal/non-thermal hot
plasma emission model for X-ray binaries. The underlying physics and a
detailed description of the code are included in this draft paper. Do not use these models without
reading and understanding this paper. The original website for these
models is http://www.astro.yale.edu/coppi/eqpair.
The parameters for eqpair are
par1 = l_h/l_s, ratio of the hard to soft compactnesses
par2 = l_bb, the soft photon compactness
par3 = kT_bb, if > 0 then temperature of the inner edge of the
accretion disk for the diskbb model; if < 0 then abs(kT_bb) is the
T_max parameter for the diskpn model.
par4 = l_nt/l_h, fraction of power supplied to energetic particles
which goes into accelerating non-thermal particles.
par5 = tau_p, the Thomson scattering depth.
par6 = radius, the size of the scattering region (cm).
par7 = g_min, minimum Lorentz factor of the pairs.
par8 = g_max, maximum Lorentz factor of the pairs.
par9 = G_inj, if < 0 then non-thermal spectrum is assumed
mono-energetic at g_max; if > 0 then a power-law from g_min to g_max.
par10 = pairinj, if = 0 then accelerated particles are electrons from
thermal pool; if = 1 then accelerated particles are electrons and positrons.
par11 = cosIncl, inclination of reflecting material wrt line-of-sight.
par12 = Refl, fraction of scattering region's emission intercepted by
par13 = Fe_abund, relative abundance of iron.
par14 = Ab>He, relative abundance of other metals.
par15 = T_disk, temperature of reflecting disk.
par16 = xi, ionization parameter of reflector.
par17 = Beta, power-law index with radius of disk reflection emissivity.
par18 = Rin, inner radius of reflecting material (GM/c^2).
par19 = Rout, outer radius of reflecting material (GM/c^2).
par20 = redshift.
Simplified models eqtherm and compth are provided for cases where non-thermal processes
are not important and photon-photon pair production can be ignored. These should only be used if l_bb <~ 10.
The source code and required data files are included in this gzipped tar file. You will need to edit
the file xseqpair.f to ensure that DATADIR points to the correct directory.
Lab. for High Energy Astrophysics, NASA/Goddard Space Flight Center
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