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This article is cited in 11 scientific papers (total in 11 papers)
ASTROPHYSICS AND COSMOLOGY
Estimates of the cosmic gamma-ray flux at PeV to EeV energies
from the EAS-MSU experiment data
Yu. A. Fomina, N. N. Kalmykova, G. V. Kulikova, V. P. Silakova, S. V. Troitskiib a Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics
b Institute for Nuclear Research, Russian Academy of Sciences, Moscow
Abstract:
Archival EAS–MSU data are searched for anomalous muonless
events which
may be caused by primary gamma rays with energies between $10^{15}$ and
$10^{18}$ eV. We
consider a refined sample of high-quality data and
confirm the previously reported detection of a non-zero
gamma-ray flux at $\sim5\cdot10^{16}$ eV
with a similar flux value but at somewhat lower statistical significance,
corresponding to a depletion of the sample. We
present upper limits on the flux below and
above these energies, including the first constraints in the range
$10^{16.5}{-}10^{17.5}$ eV never studied by any other
experiment.
Received: 10.10.2014 Revised: 28.10.2014
Citation:
Yu. A. Fomin, N. N. Kalmykov, G. V. Kulikov, V. P. Silakov, S. V. Troitskii, “Estimates of the cosmic gamma-ray flux at PeV to EeV energies
from the EAS-MSU experiment data”, Pis'ma v Zh. Èksper. Teoret. Fiz., 100:11 (2014), 797–800; JETP Letters, 100:11 (2014), 699–702
Linking options:
https://www.mathnet.ru/eng/jetpl4481 https://www.mathnet.ru/eng/jetpl/v100/i11/p797
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