Effects of Kerr space-time on spectral features from X-ray illuminated accretion discs

We performed detailed calculations of the relativistic effects acting on bo th the reflection continuum and the iron line from accretion discs around r otating black holes. Fully relativistic transfer of both illuminating and r eprocessed photons has been considered in Kerr space-time. We calculated ov erall spectra, line profiles and integral quantities, and present their dep endences on the black hole angular momentum. We show that the observed EW o f the lines is substantially enlarged when the black hole rotates rapidly a nd/or the source of illumination is near above the hole. Therefore, such ca lculations provide a way to distinguish between different models of the cen tral source.