Anisotropy search in the Ultra High Energy Cosmic Ray Spectrum in the Northern Hemisphere using latest data obtained with Telescope Array surface detector

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021) Pub Date : 2021-08-05 DOI:10.22323/1.395.0344

T. Nonaka, R. Abbasi, T. Abu-Zayyad, M. Allen, Y. Arai, R. Arimura, E. Barcikowski, J. Belz, D. Bergman, Sam Blake, R. Cady, B. Cheon, J. Chiba, M. Chikawa, T. Fujii, K. Fujisue, K. Fujita, R. Fujiwara, M. Fukushima, Ryota Fukushima, G. Furlich, R. Gonzalez, W. Hanlon, M. Hayashi, N. Hayashida, K. Hibino, R. Higuchi, K. Honda, D. Ikeda, T. Inadomi, N. Inoue, T. Ishii, H. Ito, D. Ivanov, H. Iwakura, A. Iwasaki, H. Jeong, Soomin Jeong, C. Jui, K. Kadota, F. Kakimoto, O. Kalashev, K. Kasahara, S. Kasami, H. Kawai, S. Kawakami, S. Kawana, K. Kawata, I. Kharuk, E. Kido, Hang-Je Kim, Jihee Kim, Jihyun Kim, Min Hyo Kim, Sang Woo Kim, Yusuke Kimura, S. Kishigami, Y. Kubota, S. Kurisu, V. Kuzmin, M. Kuznetsov, Youngjoon Kwon, Kwangho Lee, B. Lubsandorzhiev, J. Lundquist, Kazuhiro Machida, H. Matsumiya, T. Matsuyama, J. Matthews, R. Mayta, M. Minamino, Keiji Mukai, I. Myers, S. Nagataki, K. Nakai, R. Nakamura, Toru Nakamura, Tomoyuki Nakamura, Yuya Nakamura, A. Nakazawa, E. Nishio, H. Oda, S. Ogio, M. Ohnishi, H. O

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Abstract

The Telescope Array (TA) experiment is located in the western desert of Utah, USA and observes ultra-high energy cosmic rays in the northern hemisphere. At the energies, the shape of the cosmic ray energy spectrum carries information of the source distribution. We present the search for diﬀerences in spectrum shape in diﬀerent parts of the sky using latest data of TA surface detector (SD) data. From this study, we observe an apparent enhancement in the region of the northern sky that contain nearby objects, such as the super-galactic plane. Details of this analysis will be presented.

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利用望远镜阵列表面探测器获得的最新数据对北半球超高能宇宙射线谱进行各向异性搜索

望远镜阵列(TA)实验位于美国犹他州西部沙漠，观测北半球的超高能宇宙射线。在能量上，宇宙射线能谱的形状携带着源分布的信息。我们提出了利用最新的TA表面探测器(SD)数据在天空不同部分寻找光谱形状差异的方法。从这项研究中，我们观察到在包含附近物体的北部天空区域有明显的增强，比如超星系平面。本文将详细介绍这一分析。

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Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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