Evolution of clustered magnetic nulls in a turbulent-like reconnection region in the magnetotail

Evolution of clustered magnetic nulls in a turbulent-like reconnection region in the magnetotail
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磁尾中类湍流重联区域中簇状磁零点的演化

DOI:
10.1007/s11434-016-1121-z
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发表时间:
2016-06
期刊:
影响因子:
18.9
通讯作者:
Yao Zhonghua
Yao Zhonghua
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Guo Ruilong;Pu Zuyin;Fu Suiyan;Xie Lun;Dunlop Malcolm;Bogdanova Yulia V.;He Jiansen;Wang Xin;Yao Zhonghua

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磁零点和磁链在三维磁重联过程中起着重要的作用。在本研究中,通过对cluster任务测量数据的拟合重建方法,在磁尾重连区域重构了一组零点。重构零点的数目变化迅速,呈现出类似湍流的磁结构演化。电子密度和加速电子的通量在紊流区得到增强。在这个不稳定的重连过程中,形成了aB-As-Bnull结构,呈现出通量绳的特征,在观测中类似于一个次级岛。
Magnetic null points and flux ropes play important roles in the three-dimensional process of magnetic reconnection. In this study, a cluster of null points are reconstructed in the reconnection region in the magnetotail by applying a fitting-reconstruction method to measurements from the Cluster mission. The number of reconstructed null points varies rapidly, presenting a turbulent-like evolution of the magnetic structure. The electron density and the flux of the accelerated electrons were enhanced in this turbulent-like region. During this unstable reconnection process, aB–As–Bnull structure was formed, showing flux rope features and resembling a secondary island in the observation.
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