Characteristics of air showers with energy more than 1017 eV reconstructed by the Yakutsk array radio emission measurements

• Published in: EPJ Web of Conferences
• Main Authors: Knurenko Stanislav, Petrov Igor
• Format: Article in Journal/Newspaper
• Language: English
• Published: EDP Sciences 2019
• Subjects: Physics; QC1-999; Yakutsk
• Online Access: https://doi.org/10.1051/epjconf/201920808017; https://doaj.org/article/229a3a507bc94e8ba6ffa400076bac2b

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.