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Updated results on the UHECR hotspot observed by the telescope array experiment

Authors :
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
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
Source :
Pos proceedings of science, 358
Publication Year :
2019

Abstract

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.<br />SCOPUS: cp.p<br />info:eu-repo/semantics/published

Details

Database :
OAIster
Journal :
Pos proceedings of science, 358
Notes :
1 full-text file(s): application/pdf, English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1258098566
Document Type :
Electronic Resource