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基于ACE飞船观测的银河宇宙线与太阳风变化的统计研究

郭孝城 曹世豪 熊明

郭孝城, 曹世豪, 熊明. 基于ACE飞船观测的银河宇宙线与太阳风变化的统计研究[J]. 空间科学学报, 2020, 40(6): 969-979. doi: 10.11728/cjss2020.06.969
引用本文: 郭孝城, 曹世豪, 熊明. 基于ACE飞船观测的银河宇宙线与太阳风变化的统计研究[J]. 空间科学学报, 2020, 40(6): 969-979. doi: 10.11728/cjss2020.06.969
GUO Xiaocheng, CAO Shihao, XIONG Ming. Statistical Investigation on the Galactic Cosmic Rays and Solar Wind Variation Based on ACE Observations[J]. Chinese Journal of Space Science, 2020, 40(6): 969-979. doi: 10.11728/cjss2020.06.969
Citation: GUO Xiaocheng, CAO Shihao, XIONG Ming. Statistical Investigation on the Galactic Cosmic Rays and Solar Wind Variation Based on ACE Observations[J]. Chinese Journal of Space Science, 2020, 40(6): 969-979. doi: 10.11728/cjss2020.06.969

基于ACE飞船观测的银河宇宙线与太阳风变化的统计研究

doi: 10.11728/cjss2020.06.969
基金项目: 

中国科学院空间科学战略性先导科技专项(XDB41000000,XDA15052500,XDA1701030),国家自然科学基金项目(41874171,41674146,41574159),中国科学院前沿科学重点研究计划项目(QYZDJ-SSW-JSC028),民用航天技术预先研究项目(D030202,D020301)共同资助

详细信息
    作者简介:

    郭孝城,E-mail:xcguo@swl.ac.cn

  • 中图分类号: P352

Statistical Investigation on the Galactic Cosmic Rays and Solar Wind Variation Based on ACE Observations

  • 摘要: 基于ACE飞船的资料,通过时序迭加方法统计分析了最近两个太阳活动极小年时期(2007.0-2009.0和2016.5-2019.0年)的宇宙线计数与太阳风参数的关系.结果表明,宇宙线的计数受太阳风共转流相互作用区的强烈影响,宇宙线计数变化与快慢太阳风流界面的位置密切相关,例如流界面的穿越通常伴随着宇宙线计数的下降.分析表明,第一时段的具有“雪犁”效应的宇宙线计数下降对应于流界面附近的扩散系数急剧下降,而第二时段的非“雪犁”效应的计数下降可能是由穿越流界面后的扩散系数增大引起的.日球层电流片也与宇宙线计数变化存在一定的相关性,宇宙线粒子在日球层电流片附近存在一定程度的堆积.太阳风对宇宙线的作用机制表明,宇宙线的漂移和扩散效应决定了其在1AU附近的分布变化.

     

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出版历程
  • 收稿日期:  2020-01-14
  • 修回日期:  2020-09-25
  • 刊出日期:  2020-11-15

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