Electron acceleration during magnetic islands coalescence and division process in a guide field reconnection

被引：1
|
作者：
Han, Shengxing [1 ,2 ]
Wang, Huanyu [1 ,2 ]
Gao, Xinliang [1 ,2 ]
机构：
[1] Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Geospace Environm, Hefei 230026, Peoples R China
[2] CAS Ctr Excellence Comparat Planetol, Hefei 230026, Peoples R China
来源：
CHINESE PHYSICS B | 2022年 / 31卷 / 02期
基金：
中国国家自然科学基金;
关键词：
magnetic reconnection; magnetic islands; electron acceleration; particle-in-cell simulation; PARTICLE-ACCELERATION;
D O I：
10.1088/1674-1056/ac21c0
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The magnetic merging process related to pairwise magnetic islands coalescence is investigated by two-dimensional particle-in-cell simulations with a guide field. Owing to the force of attraction between parallel currents within the initial magnetic islands, the magnetic islands begin to approach each other and merge into one big island. We find that this newly formed island is unstable and can be divided into two small magnetic islands spontaneously. Lastly, these two small islands merge again. We follow the time evolution of this process, in which the contributions of three mechanisms of electron acceleration at different stages, including the Fermi, parallel electric field, and betatron mechanisms, are studied with the guide center theory.
引用
收藏
页数：6
相关论文
共 50 条
  • [1] Electron acceleration during magnetic islands coalescence and division process in a guide field reconnection
    韩圣星
    王焕宇
    高新亮
    Chinese Physics B, 2022, (02) : 533 - 538
  • [2] Electron acceleration during guide field magnetic reconnection
    Wan, Weigang
    Lapenta, Giovanni
    Delzanno, Gian Luca
    Egedal, Jan
    PHYSICS OF PLASMAS, 2008, 15 (03)
  • [3] Electron acceleration in a secondary magnetic island formed during magnetic reconnection with a guide field
    Wang, Huanyu
    Lu, Quanming
    Huang, Can
    Wang, Shui
    PHYSICS OF PLASMAS, 2017, 24 (05)
  • [4] Electron Acceleration from Expanding Magnetic Vortices During Reconnection with a Guide Field
    Che, H.
    Zank, G. P.
    ASTROPHYSICAL JOURNAL, 2020, 889 (01):
  • [5] Electron acceleration from contracting magnetic islands during reconnection
    Drake, J. F.
    Swisdak, M.
    Che, H.
    Shay, M. A.
    NATURE, 2006, 443 (7111) : 553 - 556
  • [6] Electron acceleration from contracting magnetic islands during reconnection
    J. F. Drake
    M. Swisdak
    H. Che
    M. A. Shay
    Nature, 2006, 443 : 553 - 556
  • [7] The mechanisms of electron acceleration in antiparallel and guide field magnetic reconnection
    Huang, Can
    Lu, Quanming
    Wang, Shui
    PHYSICS OF PLASMAS, 2010, 17 (07)
  • [8] THE MECHANISMS OF ELECTRON ACCELERATION DURING MULTIPLE X LINE MAGNETIC RECONNECTION WITH A GUIDE FIELD
    Wang, Huanyu
    Lu, Quanming
    Huang, Can
    Wang, Shui
    ASTROPHYSICAL JOURNAL, 2016, 821 (02):
  • [9] The process of electron acceleration during collisionless magnetic reconnection
    Fu, XR
    Lu, QM
    Wang, S
    PHYSICS OF PLASMAS, 2006, 13 (01) : 1 - 7
  • [10] Electron acceleration in three-dimensional magnetic reconnection with a guide field
    Dahlin, J. T.
    Drake, J. F.
    Swisdak, M.
    PHYSICS OF PLASMAS, 2015, 22 (10)
12345