Modeling X/gamma-ray Spectra of Galactic Black Holes and Seyferts
  Recent high quality broad-band X-ray and gamma-ray observations of Galactic black holes by ASCA, Ginga, RXTE, and CGRO show that the spectra cannot be described by simple thermal Comptonization models (even including a fully relativistic treatment). Multi-component models accounting for Comptonization by thermal and non-thermal electrons, Compton reflection of X/gamma-rays from cold matter, and emission of the optically thick accretion disk are required. In this review, I discuss recent advances in the spectral modeling of Galactic black holes and Seyferts and the codes available for such an analysis. 
Juri Poutanen (Stockholm Observatory)