Abstract
Magnetized accretion flows around black holes which include standing or oscillating shock waves can produce very realistic spectrum till a few MeV. These shocks accelerate hot electrons which produce power-law spectrum. The post-shock region intercepts soft-photons from an external source, namely, a Keplerian disk and also from distributed sources such as the synchrotron photons emitted from thermal and non-thermal electrons originated in the pre-shock and post-shock flow. These photons are inverse Comptonized by the thermal and the non-thermal electrons present in the CENBOL region. Computations show that the emitted radiation is extended till a few MeV. We include the bulk motion Comptonization as well and discuss its importance vis-a-vis the power-law spectrum produced by non-thermal electrons.
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Chakrabarti, S.K., Mandal, S. (2007). Spectral properties of shocked accretion flows— a self-consistent study. In: Paredes, J., Reimer, O., Torres, D. (eds) The Multi-Messenger Approach to High-Energy Gamma-Ray Sources. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6118-9_25
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DOI: https://doi.org/10.1007/978-1-4020-6118-9_25
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-6117-2
Online ISBN: 978-1-4020-6118-9
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