Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Cosmic-Ray Indirect. CRI-properties of CRs at high energies (anisotropy, energy, mass)
Energy spectrum of ultra-high energy cosmic rays according to surface detectors of Yakutsk EAS array
A. Sabourov,* A. Glushkov, M. Pravdin, Y. Egorov, A. Ivanov, S. Knurenko, A. Krasilnikov, I. Makarov, V. Mokhnachevskaya, A. Mikhailov, S. Matarkin, Z. Petrov, I. Petrov, I. Sleptsov, G. Struchkov, L. Timofeev
*corresponding author
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Pre-published on: August 16, 2017
Published on: August 03, 2018
Abstract
We present the results of the analysis of cosmic rays spectrum in energy domain above $10^{17}$ eV. The analysis covers extensive air showers registered over the course of continuous observations from 1974 to 2017. A new refined relation was applied to reconstruct primary energy in individual events. It was derived from the lateral distribution of responses of surface and underground detectors of the Yakutsk EAS array obtained in air shower simulations with four hadron interaction models -- QGSJet01, QGSJet-II-04, SIBYLL-2.1 EPOS-LHC. The resulting new energy estimation is 1.4 times lower than the values obtained earlier with calorimetric method.
DOI: https://doi.org/10.22323/1.301.0552
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