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Multi-case Study of Current Sheet Flapping Motions Induced by Non-adiabatic Ions

WEI Xinhua CAI Chunlin

WEI Xinhua, CAI Chunlin. Multi-case Study of Current Sheet Flapping Motions Induced by Non-adiabatic Ions[J]. 空间科学学报, 2021, 41(6): 858-868. doi: 10.11728/cjss2021.06.858
引用本文: WEI Xinhua, CAI Chunlin. Multi-case Study of Current Sheet Flapping Motions Induced by Non-adiabatic Ions[J]. 空间科学学报, 2021, 41(6): 858-868. doi: 10.11728/cjss2021.06.858
WEI Xinhua, CAI Chunlin. Multi-case Study of Current Sheet Flapping Motions Induced by Non-adiabatic Ions[J]. Journal of Space Science, 2021, 41(6): 858-868. doi: 10.11728/cjss2021.06.858
Citation: WEI Xinhua, CAI Chunlin. Multi-case Study of Current Sheet Flapping Motions Induced by Non-adiabatic Ions[J]. Journal of Space Science, 2021, 41(6): 858-868. doi: 10.11728/cjss2021.06.858

Multi-case Study of Current Sheet Flapping Motions Induced by Non-adiabatic Ions

doi: 10.11728/cjss2021.06.858
基金项目: 

Supported by the National Natural Science Foundation of China (41174144, 40974098)

详细信息
    作者简介:

    WEI Xinhua,E-mail:xhwei@spaceweather.ac.cn

  • 中图分类号: P353

Multi-case Study of Current Sheet Flapping Motions Induced by Non-adiabatic Ions

Funds: 

Supported by the National Natural Science Foundation of China (41174144, 40974098)

More Information
    Author Bio:

    WEI Xinhua,E-mail:xhwei@spaceweather.ac.cn

  • 摘要: In this paper, the y-component of magnetic field line curvature in the plasma sheet was analyzed, and two kinds of shear structures of the flapping current sheet were found, i.e. symmetric and antisymmetric. The alternating bending orientations of the guiding field are exactly corresponding to alternating north-south asymmetries of the bouncing ion population in the sheet center. Those alternating asymmetric plasma sources consequently induce the current sheet flapping motion as a driver. In addition, a substantial particle population with downward motion was observed in the center of a bifurcated current sheet. This population is identified as the quasi-adiabatic particles, and provides a net current opposite to the conventional cross-tail current.

     

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出版历程
  • 收稿日期:  2020-03-25
  • 修回日期:  2020-12-03
  • 刊出日期:  2021-11-15

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