Upper limit on the fraction of the cosmic ray flux from a separable source in the energy interval (1017 -1019 eV), estimated using data from the Yakutsk array

Arrival directions of ultra-high energy cosmic rays (UHECRs) in the equatorial system, detected with the Yakutsk array in the energy range (1017 -10 19 eV), are re-analyzed using a new approximation for the zenith angle distribution of the event rate of extensive air showers (EAS). While the null hy...

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Bibliographic Details
Published in:EPJ Web of Conferences
Main Author: Ivanov Anatoly
Format: Article in Journal/Newspaper
Language:English
Published: EDP Sciences 2019
Subjects:
Online Access:https://doi.org/10.1051/epjconf/201920802005
https://doaj.org/article/4c809cfee03c44ce9c119519da6f2f50
Description
Summary:Arrival directions of ultra-high energy cosmic rays (UHECRs) in the equatorial system, detected with the Yakutsk array in the energy range (1017 -10 19 eV), are re-analyzed using a new approximation for the zenith angle distribution of the event rate of extensive air showers (EAS). While the null hypothesis cannot be rejected based on the data used here, an upper limit on the fraction of cosmic rays from a separable source in the uniform background is derived as a function of declination and energy.