2024/04/25 by А. В. Глушков, Glushkov, A. V., А. В. Сабуров +5
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Particle Detector Development and Performance #Radio Astronomy Observations and Technology
paper · pdf · doi:10.48550/arxiv.2404.16948
openalex publication_date 2024/04/25 · openalex created_date 2024/04/30 · openalex updated_date 2026/07/28
An analysis of calibrations of extensive air showers with zenith angles θ≤ 50∘ and energies ESD ≥ 1018.5 eV was carried out in experiments at the Yakutsk array and Telescope Array. The values of ESD were determined from particle densities measured with ground-based scintillation detectors at a distance r = 800 m from shower axis. Measured densities were compared with the values obtained in simulations preformed with the use of CORSIKA code within the framework of QGSJet-II.04 hadron interaction model for primary protons. For showers with θ= 0∘ the ESD estimates of both arrays are very close, and their energy spectra are similar in shape and absolute value. Another Telescope Array calibration, based on measuring the EAS fluorescent radiation with optical detectors, gives underestimated energy EFD = 0.787 × ESD.