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Amenomori, M; Ayabe, S; Bi, X.J; Chen, D; Cui, S.W; Danzengluobu; Ding, L.K; Ding, X.H; Feng, C.F; Feng, Zhaoyang; Feng, Z.Y; Gao, X.Y; Geng, Q.X; Guo, H.W; He, H.H; He, M; Hibino, K; Hotta, N; Hu, Haibing; Hu, H.B; Huang, J; Huang, Q; Jia, H.Y; Kajino, F; Kasahara, K; Katayose, Y; Kato, C; Kawata, K; Labaciren; Le, G.M; Li, A.F; Li, J.Y; Lou, Y.-Q; Lu, H; Lu, S.L; Meng, X.R; Mizutani, K; Mu, J; Munakata, K; Nagai, A; Nanjo, H; Nishizawa, M; Ohnishi, M; Ohta, I; Onuma, H; Ouchi, T; Ozawa, S; Ren, J.R; Saito, T; Saito, T.Y; Sakata, M; Sako, T.K; Sasaki, T; Shibata, M; Shiomi, A; Shirai, T; Sugimoto, H; Takita, M; Tan, Y.H; Tateyama, N; Torii, S; Tsuchiya, H; Udo, S; Wang, B; Wang, H; Wang, X; Wang, Y.G; Wu, H.R; Xue, L; Yamamoto, Y; Yan, C.T; Yang, X.C; Yasue, S; Ye, Z.H; Yu, G.C; Yuan, A.F; Yuda, T; Zhang, H.M; Zhang, J.L; Zhang, N.J; Zhang, X.Y; Zhang, Y; Zhang, Yi; Zhaxisangzhu; Zhou, X.X
Science (American Association for the Advancement of Science), 10/2006, Letnik: 314, Številka: 5798Journal Article
The intensity of Galactic cosmic rays is nearly isotropic because of the influence of magnetic fields in the Milky Way. Here, we present two-dimensional high-precision anisotropy measurement for energies from a few to several hundred teraelectronvolts (TeV), using the large data sample of the Tibet Air Shower Arrays. Besides revealing finer details of the known anisotropies, a new component of Galactic cosmic ray anisotropy in sidereal time is uncovered around the Cygnus region direction. For cosmic-ray energies up to a few hundred TeV, all components of anisotropies fade away, showing a corotation of Galactic cosmic rays with the local Galactic magnetic environment. These results have broad implications for a comprehensive understanding of cosmic rays, supernovae, magnetic fields, and heliospheric and Galactic dynamic environments.
