A gamma-ray gun at the galactic center

Details A gamma-ray gun at the galactic center A gamma-ray gun at the galactic center

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983azh....60..209k&link_type=abstract

(Astronomicheskii Zhurnal, vol. 60, Mar.-Apr. 1983, p. 209-219) Soviet Astronomy (ISSN 0038-5301), vol. 27, Mar.-Apr. 1983, p. 1

Astronomy and Astrophysics

Astronomy

9

Astronomical Models, Black Holes (Astronomy), Galactic Nuclei, Gamma Rays, Accretion Disks, Electron-Positron Pairs, Milky Way Galaxy, Pair Production, Photon Beams, Radiant Flux Density

Scientific paper

This paper discusses a model of physical processes that occur in the center of the Galaxy and cause the emission of the 511 keV annihilation γ-ray line and of the continous γ-ray spectrum. According to the hypothesis suggested in the paper, electron-positron pairs, whose annihilation produces the γ-ray line and the continuum, are formed when a gas-cloud target is irradiated by a directed beam of hard (≡100 MeV) gamma-ray quanta. A model is developed of how a γ-ray beam (gamma-ray gun) is formed near a supermassive rotating black hole surrounded by a gaseous accretion disk with a magnetic field. The results of numerical simulations are compared with observational data.

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