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磁云边界层中的重联慢激波观测分析

周梓露 左平兵 宋小健

周梓露, 左平兵, 宋小健. 磁云边界层中的重联慢激波观测分析[J]. 空间科学学报, 2020, 40(4): 471-478. doi: 10.11728/cjss2020.04.471
引用本文: 周梓露, 左平兵, 宋小健. 磁云边界层中的重联慢激波观测分析[J]. 空间科学学报, 2020, 40(4): 471-478. doi: 10.11728/cjss2020.04.471
ZHOU Zilu, ZUO Pingbing, SONG Xiaojian. Observation of a Slow Shock Associated with Reconnection Exhaust inside the Boundary Layer of Magnetic Cloud at 1 AU[J]. Journal of Space Science, 2020, 40(4): 471-478. doi: 10.11728/cjss2020.04.471
Citation: ZHOU Zilu, ZUO Pingbing, SONG Xiaojian. Observation of a Slow Shock Associated with Reconnection Exhaust inside the Boundary Layer of Magnetic Cloud at 1 AU[J]. Journal of Space Science, 2020, 40(4): 471-478. doi: 10.11728/cjss2020.04.471

磁云边界层中的重联慢激波观测分析

doi: 10.11728/cjss2020.04.471
基金项目: 

国家自然科学基金项目(41731067和41531073),国家重点实验室专项研究基金项目和中国科学院“十三五”信息化建设专项项目(XXH13505-04)共同资助

详细信息
    作者简介:

    周梓露,E-mail:zakhfly@outlook.com

  • 中图分类号: P353

Observation of a Slow Shock Associated with Reconnection Exhaust inside the Boundary Layer of Magnetic Cloud at 1 AU

  • 摘要: 在Petschek模型中,排空区边界处的一对慢激波是能量耗散的重要机制.已有大量行星际空间的Petschek型磁场重联排空区观测事件被报道,但是只有少量的排空区边界处观测到了慢激波.针对一例位于磁云边界层中的Petschek型磁场重联排空区观测事件,在排空区靠近磁云一侧边界处证认了一例慢激波.激波跃变层两侧的磁场和等离子体参数满足Rankine-Hugoniot关系,且激波上下游的中间马赫数均小于1,上游的慢马赫数为2.94(>1),下游的慢马赫数为0.65(<1),符合慢激波的观测特征.磁云内部的等离子体β值很低,局地阿尔芬速度高,同时磁云边界层中可能发生丰富的磁场重联活动,这可能是磁云前边界处慢激波形成的原因.

     

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出版历程
  • 收稿日期:  2019-05-20
  • 修回日期:  2019-11-25
  • 刊出日期:  2020-07-15

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