Estimate of the fraction of primary photons in the cosmic-ray flux at energies ∼10 eV from the EAS-MSU experiment data
Journal of Experimental and Theoretical Physics, ISSN: 1063-7761, Vol: 117, Issue: 6, Page: 1011-1023
2013
- 18Citations
- 4Captures
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Article Description
We reanalyze archival EAS-MSU data in order to search for events with an anomalously low content of muons with energies E > 10 GeV in extensive air showers with the number of particles N ≠2 × 10. We confirm the first evidence for a nonzero flux of primary cosmic gamma rays at energies E ∼ 10 eV. The estimated fraction of primary gamma rays in the flux of cosmic particles with energies E ≠5.4 × 10 eV is ε = (0.43 )%, which corresponds to the intensity I = (1.2 ) × 10 cm s sr . The study of arrival directions does not favor any particular mechanism of the origin of the photon-like events. © 2013 Pleiades Publishing, Inc.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84893828875&origin=inward; http://dx.doi.org/10.1134/s1063776113140112; http://link.springer.com/10.1134/S1063776113140112; http://link.springer.com/content/pdf/10.1134/S1063776113140112; http://link.springer.com/content/pdf/10.1134/S1063776113140112.pdf; http://link.springer.com/article/10.1134/S1063776113140112/fulltext.html; https://dx.doi.org/10.1134/s1063776113140112; https://link.springer.com/article/10.1134/S1063776113140112
Pleiades Publishing Ltd
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