Electron density hole and quadruple structure of B_y during collisionless magnetic reconnection

作     者：HUANG Can WANG RongSheng LU QuanMing WANG Shui 

作者机构：CAS Key Laboratory of Basic Plasma Physics School of Earth and Space Sciences University of Science and Technology of China Hefei 230026 China Key Laboratory for Space Weather Chinese Academy of Sciences Beijing 100190 China 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2010年第55卷第24期

页      面：718-722页

核心收录：

学科分类：070802[理学-空间物理学] 07[理学] 080202[工学-机械电子工程] 08[工学] 0708[理学-地球物理学] 0804[工学-仪器科学与技术] 0802[工学-机械工程] 

基　　金：supported by the Knowledge Innovation Project of Chinese Academy of Sciences (Grant No.KJCX2-YW-N28) National Natural Science Foundation of China (Grant Nos.40674093,40725013 and 40874075) Specialized Research Fund for State Key Laboratories 

主　　题：磁场重联 电子密度 无碰撞 孔结构 分界线 电子束 电子流 磁力线 

摘      要：In collisionless reconnection,the magnetic field near the separatrix is stronger than that around the X-line,so an electron-beam can be formed and flows toward the X-line,which leads to a decrease of the electron density near the *** been accelerated around the X-line,the electrons flow out along the magnetic field lines in the inner side of the separatrix.A quadruple structure of the Hall magnetic field By is formed by such a current system.A 2D particle-in-cell (PIC) simulation code is used in this paper to study the collisionless magnetic reconnection without an initial guide *** current system described above is proved by the ***,the position of the peak of the Hall magnetic field By is found to be between the separatrix and the center of the current sheet,which is verified by Cluster observations.