Details

Autor(en) / Beteiligte

• Amenomori, M.
• Bi, X.J.
• Chen, D.
• Chen, W.Y.
• Cui, S.W.
• Danzengluobu
• Ding, L.K.
• Ding, X.H.
• Feng, C.F.
• Feng, Zhaoyang
• Feng, Z.Y.
• Gou, Q.B.
• Guo, H.W.
• Guo, Y.Q.
• He, H.H.
• He, Z.T.
• Hibino, K.
• Hotta, N.
• Hu, Haibing
• Hu, H.B.
• Huang, J.
• Jia, H.Y.
• Jiang, L.
• Kajino, F.
• Kasahara, K.
• Katayose, Y.
• Kato, C.
• Kawata, K.
• Labaciren
• Le, G.M.
• Li, A.F.
• Li, W.J.
• Liu, C.
• Liu, J.S.
• Lu, H.
• Meng, X.R.
• Mizutani, K.
• Munakata, K.
• Nanjo, H.
• Nishizawa, M.
• Ohnishi, M.
• Ohta, I.
• Ozawa, S.
• Qian, X.L.
• Qu, X.B.
• Saito, T.
• Saito, T.Y.
• Sakata, M.
• Sako, T.K.
• Shao, J.
• Shibata, M.
• Shiomi, A.
• Shirai, T.
• Sugimoto, H.
• Takita, M.
• Tan, Y.H.
• Tateyama, N.
• Torii, S.
• Tsuchiya, H.
• Udo, S.
• Wang, H.
• Wu, H.R.
• Xue, L.
• Yamamoto, Y.
• Yang, Z.
• Yasue, S.
• Yuan, A.F.
• Yuda, T.
• Zhai, L.M.
• Zhang, H.M.
• Zhang, J.L.
• Zhang, X.Y.
• Zhang, Y.
• Zhang, Yi
• Zhang, Ying
• Zhaxisangzhu
• Zhou, X.X.

Titel

Is the large-scale sidereal anisotropy of the galactic cosmic-ray intensity really instable at TeV energies?

Ist Teil von

• Astroparticle physics, 2012-08, Vol.36 (1), p.237-241

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2012

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• ► The sidereal cosmic-ray anisotropy is measured by the Tibet air-shower experiment. ► No time dependence was found in the “loss-cone” amplitude at 4.4, 6.2, and 11TeV. ► The Milagro experiment’s measurements at 6TeV are inconsistent with this paper’s. The sidereal cosmic-ray anisotropy at TeV energies has a large-scale deficit region distributed between 150 and 240 degrees in right ascension, which is called the “loss-cone”. The Milagro experiment reported the detection of a steady increase in the loss-cone amplitude at 6TeV from July 2000 to July 2007. In this paper, we examine Milagro’s claim using the data collected by the Tibet air-shower experiment from November 1999 through December 2008. No time dependence was found in the loss-cone amplitude at 4.4, 6.2, and 11TeV. If the increase in the loss-cone amplitude were, as Milagro argued, due to variations in the heliosphere in relation to solar activities, the same tendency would be seen at sub-TeV energies where the anisotropy is far more sensitive to solar activities. At 0.6TeV, however, Matsushiro underground muon observatory reported no significant increase in the loss-cone amplitude during the corresponding period.