Correlation Between Sun Shadows of 10TeV Cosmic Rays and Solar Activity

Liu Shaomin; Ding Linkai; Shi Ce; Mu Jun; Wang Hui; Lu Hong; Feng Zhenyong; Ren Jingru; Yu Guangce; Zhou Wende; Meng Xia

Chinese Physics C> 1997, Vol. 21> Issue(10) : 865-867

Correlation Between Sun Shadows of 10TeV Cosmic Rays and Solar Activity

Institute of High Energy Physics, The Chinese Academy of Sciences,Beijing 1000392 Institute for Cosmic Ray Research, Tibet University, Lhasa 8500003 Department of Physics,South West Jiaotong University Chengdu 6100314 Department of Physics, Yunnan Universtiy, Kunming 650091

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Abstract：
Using the data obtained in the period of June 1990-October 1993,the shadowsof the Sun and the Moon have been detected at 5.7σ and 7.1σ levels respectively inthe 10TeV cosmic ray flux by the Tibet air shower array at an altitude of 4300mabove sea level. The shadow of the Sun is found to be deflected away from the Sunby 0.62°to the west and 0.22° to the south by the interplanetary magnetic field.The correlations between the shadow of the Sun and Solar activity and its asymmetryare studied in Detail. A new qualitative explanation to the shift and yearly variation ofthe Sun's shadow is presented.

References

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G. W. Clark, Phys. Rev., 108(1957)450.[2] Amenomon, M. et al., Phys. Rev., D47(1993)2675.[3] Amenomon, M. et al., ApJ, 415(1994)L147.[4] Amenomori, M. et al., ApJ, 464(1996)954.[5] M. Nishizawa et al., Nucl. Instrum. Methods, A285(1989)532.[6]Amenomori,M.etal.,高能物理与核物理,17(1993)385.[7] D. E. Alexandreas et al., Phys. Rev., D43(1991)1735.[8]李惕碚,实验的数学处理,科学出版社,1980.[9] Swinson, D. B. et al., 1991, Proc. 21th ICRC, Adelaide, Autralia, SH.6.2-2.[10] Swinson, D. B. et al., 1991, Proc. 21th ICRC, Adelaide, Autralia, SH6.2-3.

[1] CHANG KONG-LIANG . DIMENSIONAL METHOD TO SOLVE THE DIFFUSION CONVECTION EQUATION OF SOLAR COSMIC RAYS. Chinese Physics C, 1978, 2(3): 200-210.
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Liu Shaomin, Ding Linkai, Shi Ce, Mu Jun, Wang Hui, Lu Hong, Feng Zhenyong, Ren Jingru, Yu Guangce, Zhou Wende, Meng Xia, Correlation Between Sun Shadows of 10TeV Cosmic Rays and Solar Activity[J]. Chinese Physics C, 1997, 21(10): 865-867.

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Correlation Between Sun Shadows of 10TeV Cosmic Rays and Solar Activity

Corresponding author: Liu Shaomin,

Institute of High Energy Physics, The Chinese Academy of Sciences,Beijing 1000392 Institute for Cosmic Ray Research, Tibet University, Lhasa 8500003 Department of Physics,South West Jiaotong University Chengdu 6100314 Department of Physics, Yunnan Universtiy, Kunming 650091

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1997-10-05

Abstract: Using the data obtained in the period of June 1990-October 1993,the shadowsof the Sun and the Moon have been detected at 5.7σ and 7.1σ levels respectively inthe 10TeV cosmic ray flux by the Tibet air shower array at an altitude of 4300mabove sea level. The shadow of the Sun is found to be deflected away from the Sunby 0.62°to the west and 0.22° to the south by the interplanetary magnetic field.The correlations between the shadow of the Sun and Solar activity and its asymmetryare studied in Detail. A new qualitative explanation to the shift and yearly variation ofthe Sun's shadow is presented.