An extremely energetic cosmic ray observed by a surface detector array

• 成果类型: Article
• 署名作者: Abbasi, R. U.; Allen, M. G.; Arimura, R.; Belz, J. W.; Bergman, D. R.; Blake, S. A.; Shin, B. K.; Buckland, I. J.; Cheon, B. G.; Fujii, T.; Fujisue, K.; Fujita, K.; Fukushima, M.; Furlich, G. D.; Gerber, Z. R.; Globus, N.; Hibino, K.; Higuchi, R.; Honda, K.; Ikeda, D.; Ito, H.; Iwasaki, A.; Jeong, S.; Jeong, H. M.; Jui, C. H.; Kadota, K.; Kakimoto, F.; Kalashev, O. E.; Kasahara, K.; Kawata, K.; Kharuk, I.; Kido, E.; Kim, S. W.; Kim, H. B.; Kim, J. H.; Kim, J. H.; Komae, I.; Kubota, Y.; Kuznetsov, M. Y.; Lee, K. H.; Lubsandorzhiev, B. K.; Lundquist, J. P.; Matthews, J. N.; Nagataki, S.; Nakamura, T.; Nakazawa, A.; Nonaka, T.; Ogio, S.; Ono, M.; Oshima, H.; Park, I. H.; Potts, M.; Pshirkov, S.; Remington, J. R.; Rodriguez, D. C.; Rott, C.; Rubtsov, G. I.; Ryu, D.; Sagawa, H.; Sakaki, N.; Sako, T.; Sakurai, N.; Shin, H.; Smith, J. D.; Sokolsky, P.; Stokes, B. T.; Stroman, T. S.; Takahashi, K.; Takeda, M.; Taketa, A.; Tameda, Y.; Thomas, S.; Thomson, G. B.; Tinyakov, P. G.; Tkachev, I.; Tomida, T.; Troitsky, S. V.; Tsunesada, Y.; Udo, S.; Urban, F. R.; Wong, T.; Yamazaki, K.; Yuma, Y.; Zhezher, Y. V.; Zundel, Z.
• 署名单位: Utah System of Higher Education; University of Utah; Utah System of Higher Education; University of Utah; Utah System of Higher Education; University of Utah; Osaka Metropolitan University; Ulsan National Institute of Science & Technology (UNIST); Hanyang University; Hanyang University; Kyoto University; Kyoto University; Osaka Metropolitan University; University of Tokyo; RIKEN; Kanagawa University; University of Yamanashi; Sungkyunkwan University (SKKU); Tokyo City University; Russian Academy of Sciences; Institute for Nuclear Research of the Russian Academy of Sciences; United States Department of Energy (DOE); Argonne National Laboratory; Shinshu University; University of Nova Gorica; Academia Sinica - Taiwan; National Aeronautics & Space Administration (NASA); University of Tokyo; Osaka Electro-Communication University; Universite Libre de Bruxelles; Czech Academy of Sciences; Institute of Physics of the Czech Academy of Sciences; Chubu University
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-9834
• DOI: 10.1126/science.abo5095
• 发表日期: 2023-11-24
• 页码: 903-907
• 关键词: cutoff; origin; well

摘要

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.)(-76)(+51) (syst.) exa-electron volts (similar to 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.