Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2011-12-23
Journal of Cosmology and Astroparticle Physics, 04 (2012) 035
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
16 pages, 10 figures
Scientific paper
10.1088/1475-7516/2012/04/035
We present spectra and mass composition of cosmic rays incoming to the Earth in the energy range (0.5-2)10^20 eV. As their sources we consider Seyfert galaxies located at distances < 40 Mpc, following an acceleration model for such moderate-power objects. Mass composition of the particles at sources is assumed to be mixed. Generation spectra are described by a function E^(-g0), where g0 is an arbitrary parameter. It is shown that the assumptions adopted make it possible to describe experimental data provided by HiRes and Pierre Auger Observatory, using different values of g0.
Kalmykov Nikolai N.
Shustova Olga P.
Uryson Anna V.
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