An extremely energetic cosmic ray observed by a surface detector array.
Journal
Science (New York, N.Y.)
ISSN: 1095-9203
Titre abrégé: Science
Pays: United States
ID NLM: 0404511
Informations de publication
Date de publication:
24 Nov 2023
24 Nov 2023
Historique:
medline:
23
11
2023
pubmed:
23
11
2023
entrez:
23
11
2023
Statut:
ppublish
Résumé
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 [Formula: see text] (~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.
Identifiants
pubmed: 37995237
doi: 10.1126/science.abo5095
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM