Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1085..636d&link_type=abstract
HIGH ENERGY GAMMA-RAY ASTRONOMY: Proceedings of the 4th International Meeting on High Energy Gamma-Ray Astronomy. AIP Conferenc
Astronomy and Astrophysics
Astronomy
Gamma-Ray, Infall, Accretion, And Accretion Disks, Galactic Nuclei, Circumnuclear Matter, And Bulges
Scientific paper
Gamma-ray absorption due to photon-photon pair production of γ-ray jet photons travelling in the external photon environment of a binary supermassive black hole system is considered. We investigate to what extent the location of a gamma-ray emitter exposed to the anisotropic radiation field of both accretion disks affects the gamma-ray opacity. The simple model analysed in this paper consists of a primary black hole surrounded by a standard accretion disk in symbiosis with a relativistic jet. The secondary black hole located at a given position nearby has a similar mass (or smaller) and is surrounded by a viscous Shakura-Sunyaev small accretion disk. We show that for standard parameters of the accretion disks and a separation distance between the two black holes of 0.05 to 0.1 pc (close system), there is still a significant γ-ray absorption from the secondary disk.
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