Primary gamma rays with energy of 1014?1016 eV and possible sources of cosmic rays in the galaxy

Autor:	E. I. Tukish, F. A. Agaronyan, S. I. Nikol'skii, É. A. Mamidzhanyan
Rok vydání:	1986
Předmět:	Physics Photon Star formation Astrophysics::High Energy Astrophysical Phenomena Milky Way Gamma ray Astronomy and Astrophysics Cosmic ray Astrophysics Ultra-high-energy cosmic ray Stellar evolution Galaxy
Zdroj:	Astrophysics. 23:408-415
ISSN:	1573-8191 0571-7132
Popis:	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 E/sub y/ greater than or equal to10/sup 15/ eV: dless than or equal to 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 E/sub y/ greater than or equal to 5 x 10/sup 14/ eV found with the Tien Shan Extensive Air Showers array are due to the contribution of unresolved discrete sources, and are formed in regions of intense star formation near the Sun.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5f77642782251d618619bb6a19f0e5ba https://doi.org/10.1007/bf01011116 Zobrazit plný text záznamu Full text from SpringerLink