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arXiv · 1702.08024

Constraints on the flux of $\sim (10^{16} - 10^{17.5})$ eV cosmic photons from the EAS-MSU muon data

Yu. A. Fomin·N. N. Kalmykov·I. S. Karpikov·G. V. Kulikov·M. Yu. Kuznetsov·G. I. Rubtsov·V. P. Sulakov·S. V. Troitsky
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Abstract

Results of the search for $\sim (10^{16} - 10^{17.5})$ eV primary cosmic-ray photons with the data of the Moscow State University (MSU) Extensive Air Shower (EAS) array are reported. The full-scale reanalysis of the data with modern simulations of the installation does not confirm previous indications of the excess of gamma-ray candidate events. Upper limits on the corresponding gamma-ray flux are presented. The limits are the most stringent published ones at energies $\sim 10^{17}$ eV.

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Yu. A. Fomin, N. N. Kalmykov, I. S. Karpikov, G. V. Kulikov, M. Yu. Kuznetsov, G. I. Rubtsov, V. P. Sulakov, S. V. Troitsky. 2017-02-26. Constraints on the flux of $\sim (10^{16} - 10^{17.5})$ eV cosmic photons from the EAS-MSU muon data. https://doi.org/10.1103/physrevd.95.123011

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