155 articles – 1965 Notices  [english version]
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2nd Kolkata Conference on Observational Evidence for Black Holes in the Universe, Calcutta : Inde (2008)
Inverse Comptonization in a Two Component Advective Flow: Results of a Monte Carlo simulation
H. Ghosh, S.K. Chakrabarti, P. Laurent1, 2
(10/2008)

We compute the resultant spectrum due to multiple scattering of soft photons emitted from a Keplerian disk by thermal electrons inside a torus axisymmetrically placed around a black hole. In a two component advective flow model, the post-shock region is similar to a thick accretion disk and the pre-shock sub-keplerian flow is highly optically thin. As a preliminary run of the Monte Carlo simulation of the system, we assume the CENBOL to be a small (2-14rg) thick accretion disk without a cusp to allow bulk motion of the flow. Bulk Motion Comptonization (BMC) has also been added. We show that the spectral behaviour is very similar to what is predicted in Chakrabarti & Titarchuk (1995).
1 :  APC - UMR 7164 - AstroParticule et Cosmologie
2 :  IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA)
APC - AHE
Planète et Univers/Astrophysique/Phénomènes cosmiques de haute energie

Physique/Astrophysique/Phénomènes cosmiques de haute energie
Galactic nuclei – circumnuclear matter – and bulges – Applications of Monte Carlo methods – Relativistic plasmas