Volume 10, Number 4 (Iranian Journal of Physics Research, Winter 2011)                   IJPR 2011, 10(4): 367-367 | Back to browse issues page

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A Kermani H, Fatemi S. A possible gamma ray primary as the highest energy cosmic rays. IJPR. 2011; 10 (4) :367-367
URL: http://ijpr.iut.ac.ir/article-1-601-en.html

Kerman University , arjomand@gmail.com
Abstract:   (10527 Views)
Muon-electron ratio and median zenith angle of Extensive Air Shower (EAS) is calculated for the energy range of 1019 to bigger than 1020 eV. The results are compared with the simulation work of Capdevielle et al [1]. The results show a good correspondence with proton primary composition up to energy level of 7×1019 eV. In higher energies above GZK cut off, a considerable increase is calculated in cosmic primary photons. In addition, event frequency distribution above energy 7×1019 eV shows increasing concentration towards super galactic plane.
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Type of Study: Research | Subject: general

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