An extremely energetic cosmic ray observed by asurface detector array

0579743 - FZÚ 2024 RIV US eng J - Článek v odborném periodiku
Abbasi, R.U. - Allen, M.G. - Arimura, R. - Urban, Federico
An extremely energetic cosmic ray observed by asurface detector array.
Science. Roč. 382, č. 6673 (2023), č. článku 903. ISSN 0036-8075. E-ISSN 1095-9203
Institucionální podpora: RVO:68378271
Klíčová slova: ultra-high-energy cosmic rays * telescope array
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 56.9, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1126/science.abo5095

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.
Trvalý link: https://hdl.handle.net/11104/0348574