Sidereal anisotropy of galactic cosmic-ray intensity observed with the Tibet air shower array

K. Kawata, M. Amenomori, S. Ayabe, D. Chen, S. W. Cui, Danzengluobu, L. K. Ding, X. H. Ding, C. F. Feng, Z. Y. Feng, X. Y. Gao, Q. X. Geng, H. W. Guo, H. H. He, M. He, K. Hibino, N. Hotta, Haibing Hu, H. B. Hu, J. HuangQ. Huang, H. Y. Jia, F. Kajino, K. Kasahara, Y. Katayose, C. Kato, K. Kawata, Labaciren, G. M. Le, J. Y. Li, H. Lu, S. L. Lu, X. R. Meng, K. Mizutani, J. Mu, K. Munakata, A. Nagai, H. Nanjo, M. Nishizawa, M. Ohnishi, I. Ohta, H. Onuma, T. Ouchi, Shunsuke Ozawa, J. R. Ren, T. Saito, T. Y. Saito, M. Sakata, T. Sasaki, M. Shibata, A. Shiomi, T. Shirai, H. Sugimoto, M. Takita, Y. H. Tan, N. Tateyama, Shoji Torii, H. Tsuchiya, S. Udo, H. Wang, X. Wang, Y. G. Wang, H. R. Wu, L. Xue, Y. Yamamoto, C. T. Yan, X. C. Yang, S. Yasue, Z. H. Ye, G. C. Yu, A. F. Yuan, T. Yuda, H. M. Zhang, J. L. Zhang, N. J. Zhang, X. Y. Zhang, Y. Zhang, Yi Zhang, Zhaxisangzhu, X. X. Zhou

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    We report the large-scale sidereal anisotropy of galactic cosmic-ray intensity in the multi-TeV region obtained with the Tibet III air shower array in the period from 1999 through 2003. The sidereal daily variation of cosmic rays observed with Tibet III clearly indicates the excess of relative intensity around 4 ∼ 7 hours local sidereal time, as well as the deficit around 12 hours local sidereal time. The amplitude of the excess is not significant when averaged over the declination, however it becomes larger and clearer as the declination of viewing direction moves toward the south. The maximum phase of the excess intensity shifts from ∼ 7 to ∼ 4 hours according to the declination moving from the northern hemisphere to the equatorial region. Furthermore.

    Original languageEnglish
    Title of host publication29th International Cosmic Ray Conference, ICRC 2005
    PublisherTata Institute of Fundamental Research
    Pages77-80
    Number of pages4
    Volume2
    Publication statusPublished - 2005
    Event29th International Cosmic Ray Conference, ICRC 2005 - Pune
    Duration: 2005 Aug 32005 Aug 10

    Other

    Other29th International Cosmic Ray Conference, ICRC 2005
    CityPune
    Period05/8/305/8/10

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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  • Cite this

    Kawata, K., Amenomori, M., Ayabe, S., Chen, D., Cui, S. W., Danzengluobu, Ding, L. K., Ding, X. H., Feng, C. F., Feng, Z. Y., Gao, X. Y., Geng, Q. X., Guo, H. W., He, H. H., He, M., Hibino, K., Hotta, N., Hu, H., Hu, H. B., ... Zhou, X. X. (2005). Sidereal anisotropy of galactic cosmic-ray intensity observed with the Tibet air shower array. In 29th International Cosmic Ray Conference, ICRC 2005 (Vol. 2, pp. 77-80). Tata Institute of Fundamental Research.