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Search for Large-scale Anisotropy on Arrival Directions of Ultra-high-energy Cosmic Rays Observed with the Telescope Array Experiment

Title
Search for Large-scale Anisotropy on Arrival Directions of Ultra-high-energy Cosmic Rays Observed with the Telescope Array Experiment
Authors
Abbasi, R. U.Abe, M.Abu-Zayyad, T.Allen, M.Azuma, R.Barcikowski, E.Belz, J. W.Bergman, D. R.Blake, S. A.Cady, R.Cheon, B. G.Chiba, J.Chikawa, M.di Matteo, A.Fujii, T.Fujisue, K.Fujita, K.Fujiwara, R.Fukushima, M.Furlich, G.Hanlon, W.Hayashi, M.Hayashida, N.Hibino, K.Higuchi, R.Honda, K.Ikeda, D.Inadomi, T.Inoue, N.Ishii, T.Ishimori, R.Ito, H.Ivanov, D.Iwakura, H.Jeong, H. M.Jeong, S.Jui, C. C. H.Kadota, K.Kakimoto, F.Kalashev, O.Kasahara, K.Kasami, S.Kawai, H.Kawakami, S.Kawana, S.Kawata, K.Kido, E.Kim, H. B.Kim, J. H.Kim, M. H.Kim, S. W.Kishigami, S.Kuzmin, VKuznetsov, M.Kwon, Y. J.Lee, K. H.Lubsandorzhiev, B.Lundquist, J. P.Machida, K.Matsumiya, H.Matsuyama, T.Matthews, J. N.Mayta, R.Minamino, M.Mukai, K.Myers, INagataki, S.Nakai, K.Nakamura, R.Nakamura, T.Nakamura, Y.Nonaka, T.Oda, H.Ogio, S.Ohnishi, M.Ohoka, H.Oku, Y.Okuda, T.Omura, Y.Ono, M.Onogi, R.Oshima, A.Ozawa, S.Park, I. H.Pshirkov, M. S.Remington, J.Rodriguez, D. C.Rubtsov, G.Ryu, D.Sagawa, H.Sahara, R.Saito, Y.Sakaki, N.Sako, T.Sakurai, N.Sano, K.Seki, T.Sekino, K.Shah, P. D.Shibata, F.Shibata, T.Shimodaira, H.Shin, B. K.Shin, H. S.Smith, J. D.Sokolsky, P.Sone, N.Stokes, B. T.Stroman, T. A.Suzawa, T.Takagi, Y.Takahashi, Y.Takamura, M.Takeda, M.Takeishi, R.Taketa, A.Takita, M.Tameda, Y.Tanaka, H.Tanaka, K.Tanaka, M.Tanoue, Y.Thomas, S. B.Thomson, G. B.Tinyakov, P.Tkachev, ITokuno, H.Tomida, T.Troitsky, S.Tsunesada, Y.Uchihori, Y.Udo, S.Uehama, T.Urban, F.Wong, T.Yada, K.Yamamoto, M.Yamazaki, K.Yang, J.Yashiro, K.Yosei, M.Zhezher, Y.Zundel, Z.
Ewha Authors
양종만
SCOPUS Author ID
양종만scopusscopus
Issue Date
2020
Journal Title
ASTROPHYSICAL JOURNAL LETTERS
ISSN
2041-8205JCR Link

2041-8213JCR Link
Citation
ASTROPHYSICAL JOURNAL LETTERS vol. 898, no. 2
Keywords
Cosmic raysUltra-high-energy cosmic radiationCosmic ray sourcesCosmic ray showersCosmic ray detectorsCosmic ray astronomyExtragalactic astronomyExtragalactic magnetic fields
Publisher
IOP PUBLISHING LTD
Indexed
SCIE; SCOPUS WOS
Document Type
Article
Abstract
Motivated by the detection of a significant dipole structure in the arrival directions of ultra-high-energy cosmic rays above 8 EeV reported by the Pierre Auger Observatory (Auger), we search for a large-scale anisotropy using data collected with the surface detector array of the Telescope Array Experiment (TA). With 11 yr of TA data, a dipole structure in a projection of the R.A. is fitted with an amplitude of 3.3% 1.9% and a phase of 131 degrees 33 degrees. The corresponding 99% confidence-level upper limit on the amplitude is 7.3%. At the current level of statistics, the fitted result is compatible with both an isotropic distribution and the dipole structure reported by Auger.
DOI
10.3847/2041-8213/aba0bc
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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