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太阳风中磁场重联离子扩散区的大尺度特征

徐晓军 魏奉思 冯学尚

徐晓军, 魏奉思, 冯学尚. 太阳风中磁场重联离子扩散区的大尺度特征[J]. 空间科学学报, 2012, 32(6): 778-784. doi: 10.11728/cjss2012.06.778
引用本文: 徐晓军, 魏奉思, 冯学尚. 太阳风中磁场重联离子扩散区的大尺度特征[J]. 空间科学学报, 2012, 32(6): 778-784. doi: 10.11728/cjss2012.06.778
XU Xiaojun, WEI Fengsi, FENG Xueshang. Characteristics of Reconnection Diffusion Region in the Solar Wind[J]. Journal of Space Science, 2012, 32(6): 778-784. doi: 10.11728/cjss2012.06.778
Citation: XU Xiaojun, WEI Fengsi, FENG Xueshang. Characteristics of Reconnection Diffusion Region in the Solar Wind[J]. Journal of Space Science, 2012, 32(6): 778-784. doi: 10.11728/cjss2012.06.778

太阳风中磁场重联离子扩散区的大尺度特征

doi: 10.11728/cjss2012.06.778
基金项目: 国家自然科学基金项目(40890162, 40921063, 40904049和41031066)和国家重点实验室专项基金共同资助
详细信息
  • 中图分类号: P353

Characteristics of Reconnection Diffusion Region in the Solar Wind

  • 摘要: 利用ACE和WIND卫星2007年1月6日的联合探测, 在1AU附近发现了一个等离子体密度极低的Petschek-like重联喷流区. 该喷流区内部出现了非常明显的Hall双极磁场、等离子体密度下降区以及与Hall电流相符的低能段电子投掷角分布. 这些特征与重联离子扩散区的Hall效应非常吻合, 说明很可能在太阳风中观测到了一个离子扩散区. 分析表明, 与之相关的磁场重联为准稳态快速完全反向重联, 其扩散区以一对慢模波为边界, 空间尺度达到80个离子惯性长度, 表现出了大尺度重联的特征.

     

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出版历程
  • 收稿日期:  2011-05-04
  • 修回日期:  2011-11-18
  • 刊出日期:  2012-11-15

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