Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-05-31
Proc. 28-th RCRC, Moscow, 2004, 1411.
Astronomy and Astrophysics
Astrophysics
4 pages, 4 figures. The paper will be published in Proc. 28-th Russian conf. on cosm. rays, Moscow, 2004
Scientific paper
Arrival directions of extensive air showers by using world data are considered. It is shown that distributions of showers in zenith angle at E>10^{19}eV and E>4.10^{19}eV differ from each other. On this basis the conclusions are made: the estimation of the energy of inclined showers at E>4.10^{19}eV at Yakutsk and AGASA arrays is incorrect; the cosmic ray spectrum is not break up and most likely continued up to E=10^{20}eV and higher. It is found that ultrahigh energy cosmic rays are, probably, superheavy nuclei.
Efremov N. N.
Makarov I. T.
Mikhailov Andrei
Nikolayeva G. V.
Struchkov G. G.
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