Journal
NONLINEAR PROCESSES IN GEOPHYSICS
Volume 18, Issue 5, Pages 727-733Publisher
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/npg-18-727-2011
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Funding
- National Science Foundation of China [40931053, 40725013, 40974081]
- State Oceanic Administration People's Republic of China [201005017]
- Specialized Research Fund for State Key Laboratories
- Fundamental Research Funds for the Central Universities [WK2080000010]
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Two-dimensional (2-D) particle-in-cell (PIC) simulations are performed to investigate the evolution of the electron current sheet (ECS) in guide field reconnection. The ECS is formed by electrons accelerated by the inductive electric field in the vicinity of the X line, which is then extended along the x direction due to the imbalance between the electric field force and Ampere force. The tearing instability is unstable when the ECS becomes sufficiently long and thin, and several seed islands are formed in the ECS. These tiny islands may coalesce and form a larger secondary island in the center of the diffusion region.
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