Time dependence of loss-cone amplitude measured with the tibet air-shower array

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

doi:10.7529/ICRC2011/V01/0379

Time dependence of loss-cone amplitude measured with the tibet air-shower array

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

^*Corresponding author for this work

Waseda Research Institute for Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Citations (Scopus)

Abstract

The galactic cosmic-ray anisotropy at TeV energies has a large-scale deficit region distributed around 150 to 240 degrees in right ascension, which is called "Loss-Cone". The Milagro experiment in the U.S. detected a significant increase in the Loss-Cone amplitude at 6 TeV from July 2000 to July 2007, and argued that it could be due to variations in the heliosphere in relation to solar activities. In this presentation, we report on the time dependence of the Loss-Cone amplitude from November 1999 through December 2008 measured with the Tibet air-shower array. No time dependence was found in the Loss-Cone amplitude at energies of 4.4, 6.2, and 11 TeV. If the increase in the Loss-Cone amplitude Milagro detected were genuine, the same tendency would be seen at sub-TeV energies where the anisotropy is far more sensitive to solar activities. Matsushiro underground muon observation at 0.6 TeV during the corresponding period, however, reported no significant increase of the Loss-Cone amplitude.

Original language	English
Title of host publication	Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011
Publisher	Institute of High Energy Physics
Pages	62-65
Number of pages	4
Volume	1
DOIs	https://doi.org/10.7529/ICRC2011/V01/0379
Publication status	Published - 2011
Event	32nd International Cosmic Ray Conference, ICRC 2011 - Beijing Duration: 2011 Aug 11 → 2011 Aug 18

Other

Other	32nd International Cosmic Ray Conference, ICRC 2011
City	Beijing
Period	11/8/11 → 11/8/18

Keywords

Galactic cosmic rays
Loss cone
Sidereal anisotropy
TeV energies
Tibet

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.7529/ICRC2011/V01/0379

Cite this

Amenomori, M., Bi, X. J., Chen, D., Chen, W. Y., Cui, S. W., Luobu, D., Ding, L. K., Ding, X. H., Feng, C. F., Feng, Z., Feng, Z. Y., Gou, Q. B., Guo, H. W., Guo, Y. Q., He, H. H., He, Z. T., Hibino, K., Hotta, N., Hu, H., ... Zhou, X. X. (2011). Time dependence of loss-cone amplitude measured with the tibet air-shower array. In Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011 (Vol. 1, pp. 62-65). Institute of High Energy Physics. https://doi.org/10.7529/ICRC2011/V01/0379

Amenomori, M, Bi, XJ, Chen, D, Chen, WY, Cui, SW, Luobu, D, Ding, LK, Ding, XH, Feng, CF, Feng, Z, Feng, ZY, Gou, QB, Guo, HW, Guo, YQ, He, HH, He, ZT, Hibino, K, Hotta, N, Hu, H, Hu, HB, Huang, J, Li, WJ, Jia, HY, Jiang, L, Kajino, F, Kasahara, K, Katayose, Y, Kato, C, Kawata, K, Baciren, L, Le, GM, Li, AF, Liu, C, Liu, JS, Lu, H, Meng, XR, Mizutani, K, Munakata, K, Nanjo, H, Nishizawa, M, Ohnish, M, Ohta, I, Ozawa, S, Qian, XL, Qu, XB, Saito, T, Saito, TY, Sakata, M, Sako, TK, Shao, J, Shibata, M, Shiomi, A, Shirai, T, Sugimoto, H, Takita, M, Tan, YH, Tateyama, N, Torii, S, Tsuchiya, H, Udo, S, Wang, H, Wu, HR, Xue, L, Yamamoto, Y, Yang, Z, Yasue, S, Yuan, AF, Yuda, T, Zhai, LM, Zhang, HM, Zhang, JL, Zhang, XY, Zhang, Y, Zhang, Y, Zhang, Y, Ngzhu, Z & Zhou, XX 2011, Time dependence of loss-cone amplitude measured with the tibet air-shower array. in Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011. vol. 1, Institute of High Energy Physics, pp. 62-65, 32nd International Cosmic Ray Conference, ICRC 2011, Beijing, 11/8/11. https://doi.org/10.7529/ICRC2011/V01/0379

@inproceedings{609d425b48574f5f8ae41faa7b0cc5bf,

title = "Time dependence of loss-cone amplitude measured with the tibet air-shower array",

abstract = "The galactic cosmic-ray anisotropy at TeV energies has a large-scale deficit region distributed around 150 to 240 degrees in right ascension, which is called {"}Loss-Cone{"}. The Milagro experiment in the U.S. detected a significant increase in the Loss-Cone amplitude at 6 TeV from July 2000 to July 2007, and argued that it could be due to variations in the heliosphere in relation to solar activities. In this presentation, we report on the time dependence of the Loss-Cone amplitude from November 1999 through December 2008 measured with the Tibet air-shower array. No time dependence was found in the Loss-Cone amplitude at energies of 4.4, 6.2, and 11 TeV. If the increase in the Loss-Cone amplitude Milagro detected were genuine, the same tendency would be seen at sub-TeV energies where the anisotropy is far more sensitive to solar activities. Matsushiro underground muon observation at 0.6 TeV during the corresponding period, however, reported no significant increase of the Loss-Cone amplitude.",

keywords = "Galactic cosmic rays, Loss cone, Sidereal anisotropy, TeV energies, Tibet",

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

year = "2011",

doi = "10.7529/ICRC2011/V01/0379",

language = "English",

volume = "1",

pages = "62--65",

booktitle = "Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011",

publisher = "Institute of High Energy Physics",

note = "32nd International Cosmic Ray Conference, ICRC 2011 ; Conference date: 11-08-2011 Through 18-08-2011",

}

TY - GEN

T1 - Time dependence of loss-cone amplitude measured with the tibet air-shower array

AU - Amenomori, M.

AU - Bi, X. J.

AU - Chen, D.

AU - Chen, W. Y.

AU - Cui, S. W.

AU - Luobu, Danzeng

AU - Ding, L. K.

AU - Ding, X. H.

AU - Feng, C. F.

AU - Feng, Zhaoyang

AU - Feng, Z. Y.

AU - Gou, Q. B.

AU - Guo, H. W.

AU - Guo, Y. Q.

AU - He, H. H.

AU - He, Z. T.

AU - Hibino, K.

AU - Hotta, N.

AU - Hu, Haibing

AU - Hu, H. B.

AU - Huang, J.

AU - Li, W. J.

AU - Jia, H. Y.

AU - Jiang, L.

AU - Kajino, F.

AU - Kasahara, K.

AU - Katayose, Y.

AU - Kato, C.

AU - Kawata, K.

AU - Baciren, La

AU - Le, G. M.

AU - Li, A. F.

AU - Liu, C.

AU - Liu, J. S.

AU - Lu, H.

AU - Meng, X. R.

AU - Mizutani, K.

AU - Munakata, K.

AU - Nanjo, H.

AU - Nishizawa, M.

AU - Ohnish, M.

AU - Ohta, I.

AU - Ozawa, Shunsuke

AU - Qian, X. L.

AU - Qu, X. B.

AU - Saito, T.

AU - Saito, T. Y.

AU - Sakata, M.

AU - Sako, T. K.

AU - Shao, J.

AU - Shibata, M.

AU - Shiomi, A.

AU - Shirai, T.

AU - Sugimoto, H.

AU - Takita, M.

AU - Tan, Y. H.

AU - Tateyama, N.

AU - Torii, Shoji

AU - Tsuchiya, H.

AU - Udo, S.

AU - Wang, H.

AU - Wu, H. R.

AU - Xue, L.

AU - Yamamoto, Y.

AU - Yang, Z.

AU - Yasue, S.

AU - Yuan, A. F.

AU - Yuda, T.

AU - Zhai, L. M.

AU - Zhang, H. M.

AU - Zhang, J. L.

AU - Zhang, X. Y.

AU - Zhang, Y.

AU - Zhang, Yi

AU - Zhang, Ying

AU - Ngzhu, Zhaxisa

AU - Zhou, X. X.

PY - 2011

Y1 - 2011

N2 - The galactic cosmic-ray anisotropy at TeV energies has a large-scale deficit region distributed around 150 to 240 degrees in right ascension, which is called "Loss-Cone". The Milagro experiment in the U.S. detected a significant increase in the Loss-Cone amplitude at 6 TeV from July 2000 to July 2007, and argued that it could be due to variations in the heliosphere in relation to solar activities. In this presentation, we report on the time dependence of the Loss-Cone amplitude from November 1999 through December 2008 measured with the Tibet air-shower array. No time dependence was found in the Loss-Cone amplitude at energies of 4.4, 6.2, and 11 TeV. If the increase in the Loss-Cone amplitude Milagro detected were genuine, the same tendency would be seen at sub-TeV energies where the anisotropy is far more sensitive to solar activities. Matsushiro underground muon observation at 0.6 TeV during the corresponding period, however, reported no significant increase of the Loss-Cone amplitude.

AB - The galactic cosmic-ray anisotropy at TeV energies has a large-scale deficit region distributed around 150 to 240 degrees in right ascension, which is called "Loss-Cone". The Milagro experiment in the U.S. detected a significant increase in the Loss-Cone amplitude at 6 TeV from July 2000 to July 2007, and argued that it could be due to variations in the heliosphere in relation to solar activities. In this presentation, we report on the time dependence of the Loss-Cone amplitude from November 1999 through December 2008 measured with the Tibet air-shower array. No time dependence was found in the Loss-Cone amplitude at energies of 4.4, 6.2, and 11 TeV. If the increase in the Loss-Cone amplitude Milagro detected were genuine, the same tendency would be seen at sub-TeV energies where the anisotropy is far more sensitive to solar activities. Matsushiro underground muon observation at 0.6 TeV during the corresponding period, however, reported no significant increase of the Loss-Cone amplitude.

KW - Galactic cosmic rays

KW - Loss cone

KW - Sidereal anisotropy

KW - TeV energies

KW - Tibet

UR - http://www.scopus.com/inward/record.url?scp=84871281797&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84871281797&partnerID=8YFLogxK

U2 - 10.7529/ICRC2011/V01/0379

DO - 10.7529/ICRC2011/V01/0379

M3 - Conference contribution

AN - SCOPUS:84871281797

VL - 1

SP - 62

EP - 65

BT - Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011

PB - Institute of High Energy Physics

T2 - 32nd International Cosmic Ray Conference, ICRC 2011

Y2 - 11 August 2011 through 18 August 2011

ER -

Time dependence of loss-cone amplitude measured with the tibet air-shower array

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