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Possible interpretations of the joint observations of UHECR arrival directions using data recorded at the Telescope Array and the Pierre Auger Observatory

Collaborations
Jul 25, 2023
9 pages
Published in:
  • PoS ICRC2023 (2023) 528
Contribution to:
  • Published: Jul 25, 2023
DOI:
Experiments:
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20222023202401
Abstract: (SISSA)
Various hints for anisotropies in the distribution of arrival directions of ultra-high-energy cosmic rays (UHECRs) have been reported. Still, our poor knowledge about intergalactic and Galactic magnetic fields and about the UHECR mass composition makes it non-trivial to interpret such results in terms of possible models of UHECR sources. In this work, we apply the same analyses that have been performed on the Pierre Auger Observatory and the Telescope Array UHECR data to a variety of Monte Carlo simulations generated according to many different combinations of hypotheses about the sources, composition and magnetic deflections of UHECRs. We find that only some of these models can yield results similar to those obtained with the real data.
  • cosmic radiation: UHE
  • deflection: magnetic
  • magnetic field: galaxy
  • numerical calculations: Monte Carlo
  • Telescope Array Experiment
  • Auger
  • mass spectrum
  • anisotropy
  • [1]
    Department of Physics, Loyola University Chicago, Chicago, Illinois 60660, USA
    • [2]
      Assembly School of Science and Technology Institute of Engineering, Shinshu University, Nagano, Nagano 380-8554, Japan
      • [3]
        High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112-0830, USA
        • [4]
          Graduate School of Science, Osaka Metropolitan University, Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
          • [5]
            Department of Physics and The Research Institute of Natural Science, Hanyang University, Seongdong-gu, Seoul 426-791, Korea
            • [6]
              Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
              • [7]
                Institute of Physics, Academia Sinica, Taipei City 115201, Taiwan
                • [8]
                  Nambu Yoichiro Institute of Theoretical and Experimental Physics, Osaka Metropolitan University, Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
                  • [9]
                    Astrophysical Big Bang Laboratory, RIKEN, Wako, Saitama 351-0198, Japan
                    • [10]
                      Faculty of Engineering, Kanagawa University, Yokohama, Kanagawa 221-8686, Japan
                      • [11]
                        Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Kofu, Yamanashi 400-8511, Japan
                        • [12]
                          The Graduate School of Science and Engineering, Saitama University, Saitama, Saitama 338-8570, Japan
                          • [13]
                            Department of Physics, SungKyunKwan University, Jang-an-gu, Suwon 16419, Korea
                            • [14]
                              Department of Physics, Tokyo City University, Setagaya-ku, Tokyo 158-8557, Japan
                              • [15]
                                Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
                                • [16]
                                  Faculty of Systems Engineering and Science, Shibaura Institute of Technology, Minato-ku, Tokyo 337-8570, Japan
                                  • [17]
                                    Graduate School of Engineering, Osaka Electro-Communication University, Neyagawa-shi, Osaka 572-8530, Japan
                                    • [18]
                                      Service de Physique Théorique, Université Libre de Bruxelles, Brussels 1050, Belgium
                                      • [19]
                                        Department of Physics, Yonsei University, Seodaemun-gu, Seoul 120-749, Korea
                                        • [20]
                                          Center for Astrophysics and Cosmology, University of Nova Gorica, Nova Gorica 5297, Slovenia
                                          • [21]
                                            Faculty of Science, Kochi University, Kochi, Kochi 780-8520, Japan
                                            • [22]
                                              Department of Physical Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
                                              • [23]
                                                College of Science and Engineering, Chubu University, Kasugai, Aichi 487-8501, Japan
                                                • [24]
                                                  Quantum ICT Advanced Development Center, National Institute for Information and Communications Technology, Koganei, Tokyo 184-8795, Japan
                                                  • [25]
                                                    Sternberg Astronomical Institute
                                                    • Moscow M.V. Lomonosov State
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