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Anisotropy and corotation of Galactic cosmic rays

被引：206
作者：
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.
机构：
[1] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
[2] Hirosaki Univ, Dept Phys, Hirosaki, Aomori 0368561, Japan
[3] Saitama Univ, Dept Phys, Saitama 3388570, Japan
[4] Yokohama Natl Univ, Fac Engn, Yokohama, Kanagawa 2408501, Japan
[5] Hebei Normal Univ, Dept Phys, Shijiazhuang 050016, Peoples R China
[6] Tibet Univ, Dept Math & Phys, Lhasa 850000, Peoples R China
[7] Shandong Univ, Dept Phys, Jinan 250100, Peoples R China
[8] SW Jiaotong Univ, Inst Modern Phys, Chengdu 610031, Peoples R China
[9] Yunnan Univ, Dept Phys, Kunming 650091, Peoples R China
[10] Kanagawa Univ, Fac Engn, Yokohama, Kanagawa 2218686, Japan
[11] Utsunomiya Univ, Fac Educ, Utsunomiya, Tochigi 3218505, Japan
[12] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan
[13] Konan Univ, Dept Phys, Kobe, Hyogo 6588501, Japan
[14] Shibaura Inst Technol, Fac Syst Engn, Saitama 3378570, Japan
[15] Shinshu Univ, Dept Phys, Matsumoto, Nagano 3908621, Japan
[16] Chinese Acad Sci, Ctr Space Sci & Applicat Res, Beijing 100080, Peoples R China
[17] Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China
[18] Tsing Hua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China
[19] Waseda Univ, Adv Res Inst Sci & Engn, Tokyo 1698555, Japan
[20] Utsunomiya Univ, Adv Media Newtork Ctr, Utsunomiya, Tochigi 3218585, Japan
[21] Natl Inst Informat, Tokyo 1018430, Japan
[22] Univ Air, Tochigi Study Ctr, Utsunomiya, Tochigi 3210943, Japan
[23] Tokyo Metropolitan Coll Ind Technol, Tokyo 1168523, Japan
[24] Shonan Inst Technol, Fujisawa, Kanagawa 2518511, Japan
[25] RIKEN, Wako, Saitama 3510198, Japan
[26] Shinshu Univ, Sch Gen Educ, Matsumoto, Nagano 3908621, Japan
来源：
SCIENCE | 2006年 / 314卷 / 5798期
关键词：
D O I：
10.1126/science.1131702
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
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.
引用
收藏
页码：439 / 443
页数：5
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