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Deficit of Ultrahigh Energy Extensive Air Showers

A. A. Mikhailov·N. N. Efremov·I. T. Makarov·G. V. Nikolayeva·G. G. Struchkov
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Abstract

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.

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A. A. Mikhailov, N. N. Efremov, I. T. Makarov, G. V. Nikolayeva, G. G. Struchkov. 2004-05-31. Deficit of Ultrahigh Energy Extensive Air Showers. https://arxiv.org/abs/astro-ph/0405613

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