EPJ Web Conf.
Volume 208, 2019ISVHECRI 2018 - XX International Symposium on Very High Energy Cosmic Ray Interactions
|Number of page(s)||4|
|Section||UHECR, Spectra, Composition and Anisotropy|
|Published online||10 May 2019|
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
Shafer Institute for Cosmophysical Research & Aeronomy, Yakutsk 677980, Russia
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Published online: 10 May 2019
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.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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