| Autor: |
H. Kawai, Grigory Rubtsov, T. Seki, Hideaki Shimodaira, Hyoming Jeong, Toshitsugu Fujii, Shingo Kawana, G. Furlich, Takaaki Ishii, Oleg Kalashev, William Hanlon, T. Goto, K. Martens, T. Okuda, J. Yang, D. C. Rodriguez, K. Tsutsumi, M. Abe, Y. Uchihori, Elliott Barcikowski, S. Kitamura, Dmitri Ivanov, Hidemi Ito, T. Suzawa, Keijiro Mukai, Hiroyuki Sagawa, Tareq Abu-Zayyad, Maxim Pshirkov, Kenta Yashiro, Yasunori Saito, Toru Nakamura, Isaac Myers, Kenichi Kadota, R. Yamane, R. Sahara, K. Nagasawa, Heungsu Shin, Yuichiro Tameda, John N. Matthews, Ben Stokes, Fumio Kakimoto, M. Allen, L. M. Scott, Y. Hayashi, K. Yamazaki, Vladim Kuzmin, Y. J. Kwon, M. Yamamoto, K. Hibino, K. Kawata, S. Jeong, B. G. Cheon, Hideyuki Ohoka, Charlie Jui, Ryo Nakamura, K. H. Lee, T.-A. Shibata, Gordon Thomson, Nobuyuki Sakurai, Sergey Troitsky, Tom Stroman, Akimichi Taketa, Robert Cady, Kazuo Saito, J. H. Kim, Igor Tkachev, BayarJon Paul Lubsandorzhiev, J. Remington, Mayuko Minamino, K. Honda, John Belz, Yasunori Kitamura, Y. Omura, S. Kawakami, H. Oda, D. R. Bergman, H. Yoshii, Masaaki Tanaka, A. Di Matteo, Inkyu Park, Fumiya Shibata, Ryota Onogi, R. Ishimori, Kiyoshi Tanaka, Naoaki Hayashida, Takayuki Tomida, Y. Yoneda, N. Inoue, M. Ohnishi, Federico R. Urban, Akitoshi Oshima, Y. Tsunesada, Pierre Sokolsky, S. Udo, Hongsu Kim, R. Mayta, M. Takeda, S. B. Thomas, J. Ogura, Shigehiro Nagataki, Yana Zhezher, Eiji Kido, M. V. Kuznetsov, Kazuhiro Machida, K. Kasahara, Shoichi Kishigami, Hideki Tanaka, Zach Zundel, Daisuke Ikeda, R. Azuma, S. R. Stratton, Tiffany Wong, R. Takeishi, Masaki Fukushima, H. Yamaoka, Michiyuki Chikawa, Masaomi Ono, Toshiyuki Nonaka, Keitaro Fujita, B. K. Shin, Priti Shah, Peter Tinyakov, Samuel Blake, Shoichi Ogio, Masato Takita, Motoki Hayashi, J. P. Lundquist, Koichi Sekino, Y. Takahashi, Mai Takamura, Jyunsei Chiba, Dongsu Ryu, Y. Takagi, T. Matsuyama, S. Ozawa, Rasha Abbasi, S. Yoshida, Naoto Sakaki, H. Tokuno, J. D. Smith |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
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| Popis: |
The Pierre Auger Collaboration (Auger) recently reported a correlation between the arrival directions of cosmic rays with energies above 39 EeV and the flux pattern of 23 nearby starburst galaxies (SBGs). In this Letter, we tested the same hypothesis using cosmic rays detected by the Telescope Array experiment (TA) in the 9-year period from May 2008 to May 2017. Unlike the Auger analysis, we did not optimize the parameter values but kept them fixed to the best-fit values found by Auger, namely 9.7% for the anisotropic fraction of cosmic rays assumed to originate from the SBGs in the list and 12.9{\deg} for the angular scale of the correlations. The energy threshold we adopted is 43 EeV, corresponding to 39 EeV in Auger when taking into account the energy-scale difference between two experiments. We find that the TA data is compatible with isotropy to within 1.1{\sigma} and with the Auger result to within 1.4{\sigma}, meaning that it is not capable to discriminate between these two hypotheses.
Comment: More accurate title, fixed an inconsistency in the declination range used, with a few figures slightly changing as a result, other minor revisions |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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