Indications of a Cosmic Ray Source in the Perseus-Pisces Supercluster

Telescope Array Collaboration,R. U. Abbasi,T. Abu-Zayyad,M. Allen,Y. Arai,R. Arimura,E. Barcikowski,J. W. Belz,D. R. Bergman,S. A. Blake,I. Buckland,R. Cady,B. G. Cheon,J. Chiba,M. Chikawa,T. Fujii,K. Fujisue,K. Fujita,R. Fujiwara,M. Fukushima,R. Fukushima,G. Furlich,N. Globus,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. M. Jeong, S. Jeong,C. C. H. Jui,K. Kadota,F. Kakimoto,O. Kalashev,K. Kasahara,S. Kasami,H. Kawai, S. Kawakami,S. Kawana,K. Kawata,I. Kharuk,E. Kido,H. B. Kim,J. H. Kim,M. H. Kim,S. W. Kim,Y. Kimura,S. Kishigami,Y. Kubota,S. Kurisu,V. Kuzmin,M. Kuznetsov,Y. J. Kwon,K. H. Lee,B. Lubsandorzhiev,J. P. Lundquist,K. Machida,H. Matsumiya,T. Matsuyama,J. N. Matthews,R. Mayta,M. Minamino,K. Mukai,I. Myers,S. Nagataki,K. Nakai,R. Nakamura,T. Nakamura,Y. Nakamura,A. Nakazawa,E. Nishio,T. Nonaka,H. Oda,S. Ogio,M. Ohnishi,H. Ohoka,Y. Oku,T. Okuda,Y. Omura,M. Ono,R. Onogi,A. Oshima,S. Ozawa,I. H. Park,M. Potts,M. S. Pshirkov,J. Remington,D. C. Rodriguez,G. I. Rubtsov,D. Ryu, H. Sagawa,R. Sahara, Y. Saito,N. Sakaki,T. Sako,N. Sakurai,K. Sano,K. Sato,T. Seki,K. Sekino,P. D. Shah,Y. Shibasaki, F. Shibata,N. Shibata,T. Shibata,H. Shimodaira,B. K. Shin,H. S. Shin,D. Shinto,J. D. Smith,P. Sokolsky,N. Sone,B. T. Stokes,T. A. Stroman,Y. Takagi,Y. Takahashi,M. Takamura,M. Takeda,R. Takeishi, A. Taketa,M. Takita,Y. Tameda,H. Tanaka,K. Tanaka,M. Tanaka,Y. Tanoue, S. B. Thomas,G. B. Thomson,P. Tinyakov,I. Tkachev,H. Tokuno,T. Tomida,S. Troitsky,R. Tsuda,Y. Tsunesada,Y. Uchihori,S. Udo,T. Uehama,F. Urban,T. Wong,M. Yamamoto,K. Yamazaki,J. Yang,K. Yashiro,F. Yoshida,Y. Yoshioka,Y. Zhezher,Z. Zundel

arXiv (Cornell University)(2021)

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摘要
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.
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cosmic ray source,perseus-pisces
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