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Monte-Carlo Simulations of Thermal Comptonization Process in a Two Component Accretion Flow Around a Black Hole
Himadri Ghosh, Sandip K. Chakrabarti, Philippe Laurent
We compute the effects of thermal Comptonization of soft photons emitted from a Kep- lerian disk around a black hole by the post-shock region of a sub-Keplerian flow, known as the…
Discovery of Red-Skewed K_alpha iron line in Cyg X-2 with Suzaku
Nikolai Shaposhnikov, Lev Titarchuk, Philippe Laurent
We report on the Suzaku observation of neutron star low-mass X-ray binary Cygnus X-2 which reveals a presence of the iron K_alpha emission line. The line profile shows a significan…
Variable polarization measured in the prompt emission of GRB 041219A using IBIS on board INTEGRAL
D. Gotz, P. Laurent, F. Lebrun +2
Polarization measurements provide direct insight into the nature of astrophysical processes. Unfortunately, only a few instruments are available for this kind of measurements at ga…
GRB Observed by IBIS/PICsIT in the MeV Energy Range
V. Bianchin, L. Foschini, G. Di Cocco +5
We present the preliminary results of a systematic search for GRB and other transients in the publicly available data for the IBIS/PICsIT (0.2-10 MeV) detector on board INTEGRAL. L…