Kinetic simulations of secondary reconnection in the reconnection jet

被引：33

作者：

Huang, S. Y. ^{[1
,2
]}

Zhou, M. ^{[3
]}

Yuan, Z. G. ^{[1
]}

Fu, H. S. ^{[4
]}

He, J. S. ^{[5
]}

Sahraoui, F. ^{[2
]}

Aunai, N. ^{[2
]}

Deng, X. H. ^{[1
,3
]}

Fu, S. ^{[1
]}

Pang, Y. ^{[3
]}

Wang, D. D. ^{[1
]}

机构：

[1] Wuhan Univ, Sch Elect & Informat, Wuhan 430072, Peoples R China

[2] UPMC, Ecole Polytech, CNRS, Lab Phys Plasmas, Palaiseau, France

[3] Nanchang Univ, Inst Space Sci & Technol, Nanchang, Peoples R China

[4] Beihang Univ, Sch Astronaut, Space Sci Inst, Beijing 100191, Peoples R China

[5] Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS | 2015年 / 120卷 / 08期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

magnetic reconnection; secondary reconnection; reconnection jet; magnetic island; MAGNETIC RECONNECTION; DIPOLARIZATION FRONTS; COLLISIONLESS RECONNECTION; TRANSIENT RECONNECTION; ELECTRON ACCELERATION; DIFFUSION REGION; SHEATH; ISLAND; FIELD;

D O I：

10.1002/2014JA020969

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Magnetic reconnection, as one important energy dissipation process in plasmas, has been extensively studied in the past several decades. Magnetic reconnection occurring in the downstream of a primary X line is referred to as secondary reconnection. In this paper, we used kinetic simulations to investigate the secondary reconnection in detail. We found that secondary reconnection is reversed by the compression caused by the outflowing jet originating from the primary reconnection site, which results in the erosion of the magnetic island between the two X lines within similar to 3(ci)(-1). We show the observational signatures expected in electromagnetic fields and plasma measurements in the Earth's magnetotail, associated with this mechanism. These simulation results could be applied to interpret the signatures associated with the evolution of earthward magnetic islands in the Earth's magnetotail.

引用

页码：6188 / 6198

页数：11

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