학술논문
Indications of a Cosmic Ray Source in the Perseus-Pisces Supercluster
Document Type
Working Paper
Author
Telescope Array Collaboration; Abbasi, R. U.; Abu-Zayyad, T.; Allen, M.; Arai, Y.; Arimura, R.; Barcikowski, E.; Belz, J. W.; Bergman, D. R.; Blake, S. A.; Buckland, I.; Cady, R.; Cheon, B. G.; Chiba, J.; Chikawa, M.; Fujii, T.; Fujisue, K.; Fujita, K.; Fujiwara, R.; Fukushima, M.; Fukushima, R.; Furlich, G.; Globus, N.; Gonzalez, R.; Hanlon, W.; Hayashi, M.; Hayashida, N.; Hibino, K.; Higuchi, R.; Honda, K.; Ikeda, D.; Inadomi, T.; Inoue, N.; Ishii, T.; Ito, H.; Ivanov, D.; Iwakura, H.; Iwasaki, A.; 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.; Kharuk, I.; Kido, E.; Kim, H. B.; Kim, J. H.; Kim, M. H.; Kim, S. W.; Kimura, Y.; Kishigami, S.; Kubota, Y.; Kurisu, S.; Kuzmin, V.; Kuznetsov, 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, I.; Nagataki, S.; Nakai, K.; Nakamura, R.; Nakamura, T.; Nakamura, Y.; Nakazawa, A.; Nishio, E.; 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.; Potts, M.; Pshirkov, M. S.; Remington, J.; Rodriguez, D. C.; Rubtsov, G. I.; Ryu, D.; Sagawa, H.; Sahara, R.; Saito, Y.; Sakaki, N.; Sako, T.; Sakurai, N.; Sano, K.; Sato, K.; Seki, T.; Sekino, K.; Shah, P. D.; Shibasaki, Y.; Shibata, F.; Shibata, N.; Shibata, T.; Shimodaira, H.; Shin, B. K.; Shin, H. S.; Shinto, D.; Smith, J. D.; Sokolsky, P.; Sone, N.; Stokes, B. T.; Stroman, T. A.; 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, I.; Tokuno, H.; Tomida, T.; Troitsky, S.; Tsuda, R.; Tsunesada, Y.; Uchihori, Y.; Udo, S.; Uehama, T.; Urban, F.; Wong, T.; Yamamoto, M.; Yamazaki, K.; Yang, J.; Yashiro, K.; Yoshida, F.; Yoshioka, Y.; Zhezher, Y.; Zundel, Z.
Source
Subject
Language
Abstract
The Telescope Array Collaboration has observed an excess of events with $E \ge 10^{19.4} ~{\rm eV}$ in the data which is centered at (RA, dec) = ($19^\circ$, $35^\circ$). This is near the center of the Perseus-Pisces supercluster (PPSC). The PPSC is about $70 ~{\rm Mpc}$ distant and is the closest supercluster in the Northern Hemisphere (other than the Virgo supercluster of which we are a part). A Li-Ma oversampling analysis with $20^\circ$-radius circles indicates an excess in the arrival direction of events with a local significance of about 4 standard deviations. The probability of having such excess close to the PPSC by chance is estimated to be 3.5 standard deviations. This result indicates that a cosmic ray source likely exists in that supercluster.
Comment: 8 pages, 4 figures, 1 table
Comment: 8 pages, 4 figures, 1 table