Publication Date:
2006-10-21
Description:
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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉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 -- Tibet ASgamma Collaboration -- New York, N.Y. -- Science. 2006 Oct 20;314(5798):439-43.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics, Hirosaki University, Hirosaki 036-8561, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17053141" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
