par Kawata, Kenji;Di Matteo, Armando ;Fujii, Toshihiro;Ikeda, Daisuke;Ivanov, Dmitry;Jui, Charles C.C.H.;Kido, Eiji;Lundquist, Jon Paul;Matthews, John J.N.;Nagataki, Shigehiro;Nonaka, Toshiyuki;Ogio, Shoichi;Okuda, Takeshi;Rubtsov, G.;Sagawa, Hiroyuki;Sako, Takashi;Sakurai, N.;Takeda, Masahiro;Takeishi, R.;Taketa, Akimichi;Thomson, Gordon;Tiniakov, Petr ;Tkachev, Igor;Troitsky, Sergey
Référence Pos proceedings of science, 358
Publication Publié, 2019-12-01
Référence Pos proceedings of science, 358
Publication Publié, 2019-12-01
Article révisé par les pairs
Résumé : | The Telescope Array Experiment has observed an indication of intermediate-scale anisotropy in the UHECR arrival directions, called the Hotspot, with E > 57 EeV around the Ursa Major using the first 5-year data during a period between May 2008 and May 2013 collected by the TA surface detector array. The chance probability of this hotspot in an isotropic cosmic-ray sky was calculated to be 3.4s (post trial). In this paper, we will report on an update of this result using the 11-year data collected by the TA surface detectors with more than doubled exposure since the first publication. |