Search for Large-scale Anisotropy on Arrival Directions of Ultra-high-energy Cosmic Rays Observed with the Telescope Array Experiment
Abstract:
Motivated by the detection of a significant dipole structure in the arrival directions of ultra-high-energy cosmic rays above 8 EeV reported by the Pierre Auger Observatory (Auger), we search for a large-scale anisotropy using data collected with the surface detector array of the Telescope Array Experiment (TA). With 11 yr of TA data, a dipole structure in a projection of the R.A. is fitted with an amplitude of 3.3% 1.9% and a phase of 131 33 . The corresponding 99% confidence-level upper limit on the amplitude is 7.3%. At the current level of statistics, the fitted result is compatible with both an isotropic distribution and the dipole structure reported by Auger.
Año de publicación:
2020
Keywords:
Fuente:
scopus
Tipo de documento:
Article
Estado:
Acceso abierto
Áreas de conocimiento:
Áreas temáticas:
- Cuerpos y fenómenos celestes específicos
- Astronomía y ciencias afines
Contribuidores:
Furlich G.
Kakimoto F.
Kido E.
Hayashi M.
Ono M.
Kadota K.
Sakaki N.
Hanlon W.F.
Sahara R.
Rubtsov G.
Ogio S.
Kasahara K.
Fujita K.
Myers I.
Cheon B.G.
Nakamura Y.
Abe M.
Kim H.B.
Ishii T.
Seki T.
Lubsandorzhiev B.
Matthews J.N.
Kawai H.
Abbasi R.U.
Sano K.
Abu-Zayyad T.
Matteo A.D.
Kim J.H.
Kasami S.
Nagataki S.
Oda H.
T. K. Sako
Blake S.A.
Ryu D.
Kawana S.
Ito H.
Omura Y.
Barcikowski E.
Allen M.
Jeong S.
Nakamura Y.
Ohnishi M.
Oshima A.
Cady R.
Nonaka T.
Matsuyama T.
Onogi R.
Kuznetsov M.
Ishimori R.
Sakurai N.
Sekino K.
Chiba J.
Iwakura H.
Saito Y.
Pshirkov M.S.
Nakamura T.
Ohoka H.
Kishigami S.
Higuchi R.
Mayta R.
Jui C.C.H.
Inadomi T.
Matsumiya H.
Kim J.H.
Belz J.W.
Mukai K.
Fujiwara R.
Ivanov D.
Ikeda D.
Ozawa S.
Azuma R.
Fujisue K.
Sagawa H.
Kim M.H.
Lee K.H.
Kim S.W.
Bergman D.R.
Lundquist J.P.
Minamino M.
Machida K.
Fujii T.
Kuzmin V.
Kalashev O.
Chikawa M.
Nakai K.
Kawakami S.
Hibino K.
Rodriguez D.C.
Jeong H.M.
Park I.H.
Remington J.
Nakamura R.
Kwon Y.J.
Hayashida N.
Oku Y.
Okuda T.
Inoue N.
Fukushima M.
Kawata K.
Honda K.