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Isotropy of Cosmic Rays beyond 10
Abbasi, R U; Abe, Y; Abu-Zayyad, T; Allen, M; Arai, Y; Arimura, R; Barcikowski, E; Belz, J W; Bergman, D R; Blake, S A; Buckland, I; Cheon, B G; Chikawa, M; Fujii, T; Fujisue, K; Fujita, K; Fujiwara, R; Fukushima, M; Furlich, G; Globus, N; Gonzalez, R; Hanlon, W; Hayashida, N; He, H; Hibi, R; Hibino, K; Higuchi, R; Honda, K; Ikeda, D; Inoue, N; Ishii, T; Ito, H; Ivanov, D; Iwasaki, A; Jeong, H M; Jeong, S; Jui, C C H; Kadota, K; Kakimoto, F; Kalashev, O; Kasahara, K; Kasami, S; Kawakami, S; Kawata, K; Kharuk, I; Kido, E; Kim, H B; Kim, J H; Kim, J H; Kim, S W.
Afiliação
  • Abbasi RU; Department of Physics, Loyola University Chicago, Chicago, Illinois 60660, USA.
  • Abe Y; Academic Assembly School of Science and Technology Institute of Engineering, Shinshu University, Nagano, Nagano 380-8554, Japan.
  • Abu-Zayyad T; Department of Physics, Loyola University Chicago, Chicago, Illinois 60660, USA.
  • Allen M; High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112-0830, USA.
  • Arai Y; High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112-0830, USA.
  • Arimura R; Graduate School of Science, Osaka Metropolitan University, Sugimoto, Sumiyoshi, Osaka 558-8585, Japan.
  • Barcikowski E; Graduate School of Science, Osaka Metropolitan University, Sugimoto, Sumiyoshi, Osaka 558-8585, Japan.
  • Belz JW; High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112-0830, USA.
  • Bergman DR; High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112-0830, USA.
  • Blake SA; High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112-0830, USA.
  • Buckland I; High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112-0830, USA.
  • Cheon BG; High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112-0830, USA.
  • Chikawa M; Department of Physics and The Research Institute of Natural Science, Hanyang University, Seongdong-gu, Seoul 426-791, Korea.
  • Fujii T; Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan.
  • Fujisue K; Graduate School of Science, Osaka Metropolitan University, Sugimoto, Sumiyoshi, Osaka 558-8585, Japan.
  • Fujita K; Nambu Yoichiro Institute of Theoretical and Experimental Physics, Osaka Metropolitan University, Sugimoto, Sumiyoshi, Osaka 558-8585, Japan.
  • Fujiwara R; Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan.
  • Fukushima M; Institute of Physics, Academia Sinica, Taipei City 115201, Taiwan.
  • Furlich G; Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan.
  • Globus N; Graduate School of Science, Osaka Metropolitan University, Sugimoto, Sumiyoshi, Osaka 558-8585, Japan.
  • Gonzalez R; Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan.
  • Hanlon W; High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112-0830, USA.
  • Hayashida N; Astrophysical Big Bang Laboratory, RIKEN, Wako, Saitama 351-0198, Japan.
  • He H; High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112-0830, USA.
  • Hibi R; High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112-0830, USA.
  • Hibino K; Faculty of Engineering, Kanagawa University, Yokohama, Kanagawa 221-8686, Japan.
  • Higuchi R; Astrophysical Big Bang Laboratory, RIKEN, Wako, Saitama 351-0198, Japan.
  • Honda K; Academic Assembly School of Science and Technology Institute of Engineering, Shinshu University, Nagano, Nagano 380-8554, Japan.
  • Ikeda D; Faculty of Engineering, Kanagawa University, Yokohama, Kanagawa 221-8686, Japan.
  • Inoue N; Astrophysical Big Bang Laboratory, RIKEN, Wako, Saitama 351-0198, Japan.
  • Ishii T; Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Kofu, Yamanashi 400-8511, Japan.
  • Ito H; Faculty of Engineering, Kanagawa University, Yokohama, Kanagawa 221-8686, Japan.
  • Ivanov D; The Graduate School of Science and Engineering, Saitama University, Saitama, Saitama 338-8570, Japan.
  • Iwasaki A; Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Kofu, Yamanashi 400-8511, Japan.
  • Jeong HM; Astrophysical Big Bang Laboratory, RIKEN, Wako, Saitama 351-0198, Japan.
  • Jeong S; High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112-0830, USA.
  • Jui CCH; Graduate School of Science, Osaka Metropolitan University, Sugimoto, Sumiyoshi, Osaka 558-8585, Japan.
  • Kadota K; Department of Physics, SungKyunKwan University, Jang-an-gu, Suwon 16419, Korea.
  • Kakimoto F; Department of Physics, SungKyunKwan University, Jang-an-gu, Suwon 16419, Korea.
  • Kalashev O; High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112-0830, USA.
  • Kasahara K; Department of Physics, Tokyo City University, Setagaya-ku, Tokyo 158-8557, Japan.
  • Kasami S; Faculty of Engineering, Kanagawa University, Yokohama, Kanagawa 221-8686, Japan.
  • Kawakami S; Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia.
  • Kawata K; Faculty of Systems Engineering and Science, Shibaura Institute of Technology, Minato-ku, Tokyo 337-8570, Japan.
  • Kharuk I; Graduate School of Engineering, Osaka Electro-Communication University, Hatsu-cho, Neyagawa-shi, Osaka 572-8530, Japan.
  • Kido E; Graduate School of Science, Osaka Metropolitan University, Sugimoto, Sumiyoshi, Osaka 558-8585, Japan.
  • Kim HB; Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan.
  • Kim JH; Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia.
  • Kim JH; Astrophysical Big Bang Laboratory, RIKEN, Wako, Saitama 351-0198, Japan.
  • Kim SW; Department of Physics and The Research Institute of Natural Science, Hanyang University, Seongdong-gu, Seoul 426-791, Korea.
Phys Rev Lett ; 133(4): 041001, 2024 Jul 26.
Article em En | MEDLINE | ID: mdl-39121414
ABSTRACT
We report an estimation of the injected mass composition of ultrahigh energy cosmic rays (UHECRs) at energies higher than 10 EeV. The composition is inferred from an energy-dependent sky distribution of UHECR events observed by the Telescope Array surface detector by comparing it to the Large Scale Structure of the local Universe. In the case of negligible extragalactic magnetic fields (EGMFs), the results are consistent with a relatively heavy injected composition at E∼10 EeV that becomes lighter up to E∼100 EeV, while the composition at E>100 EeV is very heavy. The latter is true even in the presence of highest experimentally allowed extragalactic magnetic fields, while the composition at lower energies can be light if a strong EGMF is present. The effect of the uncertainty in the galactic magnetic field on these results is subdominant.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article