https://doi.org/10.1051/epjconf/201920808017
Characteristics of air showers with energy more than 1017 eV reconstructed by the Yakutsk array radio emission measurements
Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy
* e-mail: s.p.knurenko@ikfia.ysn.ru
** e-mail: igor.petrov@ikfia.ysn.ru
Published online: 10 May 2019
The paper presents results on the longitudinal development of air showers of ultra-high energies obtained from radio emission measurements at the Yakutsk array. The energy, the depth of maximum development of individual showers are determined and a statistical analysis of Xmax in order to estimate the fluctuation of air shower development σ(Xmax) in the energy region 1017-1018 eV is performed. It is shown that σ(Xmax) in the energy region 1017-1018 eV is equal to 50-60 g·cm-2, which doesn’t contradict with a mixed composition of cosmic rays - protons and helium nuclei. This is also indicated by data of the Xmax value dependence on energy.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
