首页|The influence of boundary conditions on the distribution of energetic electrons during collisionless magnetic reconnection
The influence of boundary conditions on the distribution of energetic electrons during collisionless magnetic reconnection
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
We conducted 2-D particle-in-cell simulations to investigate the impact of boundary conditions on the evolution of magnetic reconnection.The results demonstrate that the boundary conditions are crucial to this evolution.Specifically,in the cases of traditional periodic boundary(PB)and fully-opened boundary(OB)conditions,the evolutions are quite similar before the system achieves the fastest reconnection rate.However,differences emerge between the two cases afterward.In the PB case,the reconnection electric field experiences a rapid decline and even becomes negative,indicating a reversal of the reconnection process.In contrast,the system maintains a fast reconnection stage in the OB case.Suprathermal electrons are generated near the separatrix and in the exhaust region of both simulation cases.In the electron density depletion layer and the dipolarization front region,a larger proportion of suprathermal electrons are produced in the OB case.Medium-energy electrons are mainly located in the vicinity of the X-line and downstream of the reconnection site in both cases.However,in the OB case,they can also be generated in the electron holes along the separatrix.Before the reverse reconnection stage,no high-energy electrons are present in the PB case.In contrast,about 20％of the electrons in the thin and elongated electron current layer are high-energy in the OB case.
magnetic reconnectionelectron energizationparticle-in-cell simulation
王磊、黄灿、陈冬可、杨忠炜、杜爱民、葛亚松
展开 >
CAS Engineering Laboratory for Deep Resources Equipment and Technology,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,People's Republic of China
College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100029,People's Republic of China
State Key Laboratory of Space Weather,National Space Science Center,Chinese Academy of Sciences,Beijing 100190,People's Republic of China
中国科学院重点研究项目国家重点研发计划国家自然科学基金国家自然科学基金Youth Innovation Promotion Association,Chinese Academy of Sciences
NETL
NSTL
万方数据
