Electron acceleration in interaction of magnetic islands in large temporal-spatial turbulent magnetic reconnection | |
Zhu BJ(朱伯靖)1,2; Yan H(颜辉)3; David.A.Yuen4,5; Shi YL(石耀霖)6,7 | |
刊名 | Earth and Planetary Physics |
2019-02 | |
卷号 | 3期号:1页码:17-25 |
关键词 | Hybrid Particle Acceleration Mechanism Large Temporal-spatial Turbulent Magnetic Reconnection Hydro-dynamic-kinetic Model |
ISSN号 | 2096-3955 |
DOI | 10.26464/epp2019003 |
产权排序 | 第1完成单位 |
英文摘要 | A new combined Fermi, betatron, and turbulent electron acceleration mechanism is proposed in interaction of magnetic islands during turbulent magnetic reconnection evolution in explosive astrophysical phenomena at large temporal-spatial scale (LTSTMR), the ratio of observed current sheets thickness to electron characteristic length, electron Larmor radius for low-β and electron inertial length for high-β, is on the order of 1010–1011; the ratio of observed evolution time to electron gyroperiod is on the order of 107–109). The original combined acceleration model is known to be one of greatest importance in the interaction of magnetic islands; it assumes that the continuous kinetic-dynamic temporal-spatial scale evolution occurs as two separate independent processes. In this paper, we reconsider the combined acceleration mechanism by introducing a kinetic-dynamic-hydro full-coupled model instead of the original micro-kinetic or macro-dynamic model. We investigate different acceleration mechanisms in the vicinity of neutral points in magnetic islands evolution, from the stage of shrink and breakup into smaller islands (kinetic scale), to the stage of coalescence and growth into larger islands (dynamic scale), to the stages of constant and quasi-constant (contracting-expanding) islands (hydro scale). As a result, we give for the first time the acceleration efficiencies of different types of acceleration mechanisms in magnetic islands’ interactions in solar atmosphere LTSTMR activities (pico-, 10–2–105 m; nano-, 105–106 m; micro-, 106–107 m; macro-, 107–108 m; large-, 108–109 m). |
学科主题 | 太阳物理学 |
URL标识 | 查看原文 |
资助项目 | CAS[XDA17040507] ; CAS[XDA15010900] ; national basic research program of China[2013CBA01503] ; key program of NSFC[11333007] ; joint funds of NSFC[U1631130] ; frontier science key programs of CAS[QYZDJ-SSWSLH012] ; program for innovation team of Yunnan Province ; program for Guangdong introducing Innovative and entrepreneurial teams[2016ZT06D211] ; special program for applied research on super computation of the NSFC-Guangdong joint fund (second phase)[U1501501] |
语种 | 英语 |
资助机构 | CAS[XDA17040507, XDA15010900] ; national basic research program of China[2013CBA01503] ; key program of NSFC[11333007] ; joint funds of NSFC[U1631130] ; frontier science key programs of CAS[QYZDJ-SSWSLH012] ; program for innovation team of Yunnan Province ; program for Guangdong introducing Innovative and entrepreneurial teams[2016ZT06D211] ; special program for applied research on super computation of the NSFC-Guangdong joint fund (second phase)[U1501501] |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/18435] |
专题 | 云南天文台_太阳物理研究组 |
通讯作者 | Zhu BJ(朱伯靖) |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China 2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China 3.3National Supercomputer Center in Guangzhou, Sun Yat-sen University, Guangzhou 510006, China 4.Department of Earth Science and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis 55455, USA 5.Applied Physics and Applied Mathematics Department, Columbia University, New York 10027, USA 6.Key Laboratory of Computing Geodynamics, Chinese Academy of Sciences, Beijing 100049, China 7.College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China |
推荐引用方式 GB/T 7714 | Zhu BJ,Yan H,David.A.Yuen,et al. Electron acceleration in interaction of magnetic islands in large temporal-spatial turbulent magnetic reconnection[J]. Earth and Planetary Physics,2019,3(1):17-25. |
APA | Zhu BJ,Yan H,David.A.Yuen,&Shi YL.(2019).Electron acceleration in interaction of magnetic islands in large temporal-spatial turbulent magnetic reconnection.Earth and Planetary Physics,3(1),17-25. |
MLA | Zhu BJ,et al."Electron acceleration in interaction of magnetic islands in large temporal-spatial turbulent magnetic reconnection".Earth and Planetary Physics 3.1(2019):17-25. |
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