Shadowing of cosmic rays by the Sun near maximum or at the declining phase of solar activity
Tibet ASγ Collaboration
刊名ASTROPHYSICAL JOURNAL
1996
卷号464期号:2页码:#REF!
关键词cosmic rays interplanetary medium magnetic fields solar-terrestrial relations solar wind
学科分类Astronomy & Astrophysics
DOI10.1086/177382
通讯作者Amenomori, M (reprint author), HIROSAKI UNIV,DEPT PHYS,HIROSAKI,AOMORI 036,JAPAN.
文章类型Article
英文摘要The shadows of the Sun and Moon have been detected in the 10 TeV cosmic-ray flux by the Tibet air shower array at an altitude of 4300 m above sea level. The observation covers the period 1990 June-1993 October, which almost coincides with a near-maximum and decreasing phase of the latest solar activity cycle. Using the data obtained in this period, we examined a yearly variation of the Sun's shadow, and found for the first time that the position of the Sun's shadow changed considerably every year with the phase of the solar activity. A different variation of the Sun's shadow was also found between the ''away'' and ''toward'' sectors of the interplanetary magnetic field. These results seem to suggest a causal relation between the shadow's movement and the changing inclination of the heliospheric current sheet of the large-scale magnetic field. Further observation with higher statistics will provide a new clue to obtain direct information on the relation between a time variation of the large-scale structure of the solar and interplanetary magnetic fields and the phase of the solar activity cycle.
类目[WOS]Astronomy & Astrophysics
收录类别SCI
WOS记录号WOS:A1996UQ19400040
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被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/227785
专题中国科学院高能物理研究所_粒子天体物理中心_期刊论文
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Tibet ASγ Collaboration. Shadowing of cosmic rays by the Sun near maximum or at the declining phase of solar activity[J]. ASTROPHYSICAL JOURNAL,1996,464(2):#REF!.
APA Tibet ASγ Collaboration.(1996).Shadowing of cosmic rays by the Sun near maximum or at the declining phase of solar activity.ASTROPHYSICAL JOURNAL,464(2),#REF!.
MLA Tibet ASγ Collaboration."Shadowing of cosmic rays by the Sun near maximum or at the declining phase of solar activity".ASTROPHYSICAL JOURNAL 464.2(1996):#REF!.
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