High energy spectrum of spherically accreting black holes

Details High energy spectrum of spherically accreting black holes High energy spectrum of spherically accreting black holes

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aipc..101..348m&link_type=abstract

IN: Positron-electron pairs in astrophysics; Proceedings of the Workshop, Greenbelt, MD, January 6-8, 1983 (A85-31276 13-90). Ne

Astronomy and Astrophysics

Astronomy

Accretion Disks, Black Holes (Astronomy), Gamma Ray Astronomy, High Energy Interactions, X Ray Sources, Adiabatic Conditions, Coulomb Collisions, Energy Conversion, Energy Conversion Efficiency, Equipartition Theorem, Galactic Nuclei, Gravitational Effects, Interstellar Magnetic Fields, Periodic Variations, Quasars, Shock Wave Interaction

Scientific paper

Spherically accreting black holes may sustain strong collisionless shocks, downstream of which the fluid approximation is not valid. The proton-electron Coulomb exchange provides for the downstream matter diffusion into the hole. Energy conversion efficiencies upward of 10 - 30% are obtained, with most of the luminosity in hard X-rays and γ-rays. The authors discuss the whole spectrum and its application for radioquiet QSO's and galactic X- and γ-ray sources.

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