R. U. Abbasi (Author), M. Allen (Author), R. Arimura (Author), J. W. Belz (Author), D. R. Bergman (Author), S. A. Blake (Author), K. Shin (Author), I. J. Buckland (Author), B. G. Cheon (Author), J. P. Lundquist (Author)

Abstract

Cosmic rays are energetic charged particles from extraterrestrial sources, with the highest-energy events thought to come from extragalactic sources. Their arrival is infrequent, so detection requires instruments with large collecting areas. In this work, we report the detection of an extremely energetic particle recorded by the surface detector array of the Telescope Array experiment. We calculate the particle’s energy as 244 +- 29 (stat.) +51,-76 (syst.) exa–electron volts (~40 joules). Its arrival direction points back to a void in the large-scale structure of the Universe. Possible explanations include a large deflection by the foreground magnetic field, an unidentified source in the local extragalactic neighborhood, or an incomplete knowledge of particle physics.

Keywords

ultra-high-energy cosmic rays;telescope array;extremely energetic cosmic-ray event;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UNG - University of Nova Gorica
UDC: 52
COBISS: 234022403 Link will open in a new window
ISSN: 0036-8075
Views: 198
Downloads: 2
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Other data

Pages: str. 903-907
Volume: ǂVol. ǂ382
Issue: ǂissue ǂ6673
Chronology: 2023
DOI: 10.1126/science.abo5095
ID: 26259679