Statistics – Computation
Scientific paper
Nov 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989zhetf..96.1537b&link_type=abstract
Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki (ISSN 0044-4510), vol. 96, Nov. 1989, p. 1537-1546. In Russian.
Statistics
Computation
1
Black Holes (Astronomy), Computational Astrophysics, Gamma Ray Astronomy, Astronomical Models, Electron Gas, Extragalactic Radio Sources, Gravitational Fields, Relativistic Particles, Shock Waves
Scientific paper
The production of high-energy (about 100 MeV) gamma radiation near a black hole due to collisions of accreting protons on stable orbits is studied. The self-consistent model corresponds to spherical accretion at a low rate. For rates of about 0.003 of the critical Eddington value the proton orbits in the gravitational field of the black hole will slowly contract due to the friction in the hot electron gas. This type of motion is termed friction accretion. The gamma radiation is due to the decay of neutral pions produced in collisions between relativistic protons in the region of existence of stable orbits. This mechanism is shown to ensure a detectable gamma quantum flux from both galactic and extragalactic sources.
Berezinskii V. S.
Dokuchaev Viacheslav I.
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