EPJ Web of Conferences (Jan 2017)

Very high energy emission sources beyond the Galaxy

  • Sinitsyna V.G.,
  • Andreeva M.S.,
  • Balygin K.A.,
  • Borisov S.S.,
  • Ivanov I.A.,
  • Kirichenko A.M.,
  • Klimov A.I.,
  • Kozhukhova I.P.,
  • Mirzafatikho R.M.,
  • Moseiko N.I.,
  • Ostashev I.E.,
  • Palamarchuk A.I.,
  • Sinitsyna V.Y.,
  • Volokh I.G.

DOI
https://doi.org/10.1051/epjconf/201614519004
Journal volume & issue
Vol. 145
p. 19004

Abstract

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Active Galactic Nuclei (AGN) are considered as potential extragalactic sources of very and ultra high energy cosmic rays. According to theoretical predictions cosmic ray acceleration can take place at the shock created by the expanding cocoons around active galactic nuclei as well as at AGN jets. The measurements of AGN TeV spectra, the variability time scale of TeV emission can provide essential information on the dynamics of AGN jets, the localization of acceleration region and an estimation of its size. SHALON observations yielded data on extragalactic sources of different AGN types in the energy range of 800 GeV–100 TeV. The data from SHALON observations are compared with those from other experiments at high and very high energies.