Unusual Time Structure of Extensive Air Showers at Energies Exceeding 1017 eV

R. U. Beisembaev, Elena Beisembaeva, Oleg D. Dalkarov, V. D. Mosunov, V. A. Ryabov, S. B. Shaulov, M. I. Vildanova, V. V. Zhukov, Kanat Baigarin, Dmitriy Beznosko

1 more author

T. Kh. Sadykov

2019

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DOI 10.1134/s1063778819040057

Data confidence 70 medium

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Abstract

Extensive air showers characterized by a multicomponent time structure were detected at the experimental Horizon-T array deployed at the Tien Shan High-Altitude Science Station of Lebedev Physical Institute, Russian Academy of Sciences, at an altitude of 3346 meters above sea level. Such a structure manifested itself in showers of energy above 10 17 eV and suggests that, in contrast to the standard mechanism of the development of a nuclear-electromagnetic cascade, shower particles reach the observation level as components of several shower disks.