Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985afz....23...55a&link_type=abstract
(Astrofizika, vol. 23, July-Aug. 1985, p. 55-67) Astrophysics (ISSN 0571-7132), vol. 23, no. 1, Jan. 1986, p. 408-415. Translati
Astronomy and Astrophysics
Astronomy
5
Galactic Cosmic Rays, Gamma Ray Astronomy, High Energy Interactions, Primary Cosmic Rays, Cosmic Ray Showers, Diffuse Radiation, Energetic Particles, Pulsars, Relic Radiation, Stellar Evolution
Scientific paper
An analysis of the condition for ultrahigh-energy gamma-photons to be absorbed on fossil photons is used in order to establish a firm bound for the distances to possible sources of primary gamma rays with energies of at least 10 to the 15th eV at distances no more than 10 kpc. At the same time, the first observational indication is also obtained that ultrahigh-energy cosmic rays are generated in sources of galactic origin. Arguments are advanced to show that the diffuse gamma rays with energies of at least 5 x 10 to the 14th eV found with the Tien Shan Extensive Air Showers (EAS) array are due to the contribution of unresolved discrete sources, and are formed in regions of intense star formation near the sun.
Agaronian F. A.
Mamidzhanian E. A.
Nikolskii S. I.
Tukish E. I.
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