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Spontaneous Onset of Collisionless Magnetic Reconnection on an Electron Scale

  • Authors: Dongkuan Liu, San Lu, Quanming Lu, Weixing Ding, and Shui Wang

2020 The Astrophysical Journal Letters 890 L15.

  • Provider: AAS Journals

Caption: Figure 1.

For Case 0. (a) Evolution of in-plane magnetic field lines and out-of-plane magnetic field ﹩{B}_{y}/{B}_{0}﹩ during the onset process. (b) Time histories of reconnected magnetic flux ﹩\bigtriangleup \psi ﹩ and reconnection rate ﹩d\,\bigtriangleup \psi /{dt}﹩. Here the reconnected magnetic flux ﹩\bigtriangleup \psi ﹩ is in units of ﹩{B}_{0}{d}_{i}﹩, and it is defined as the difference between the maximum and minimum of ψ at z = 0. The reconnection rate ﹩d\,\bigtriangleup \,\psi /{dt}﹩ is in units of ﹩{B}_{0}{V}_{{\rm{A}}}﹩, and it is equivalent to the magnitude of reconnection electric field Ey at the reconnection site. In this study, we focus on the onset period (gray) covering the transition from the collisionless tearing mode instability (Ωit = 13) to fast growth of reconnection (Ωit = 33).

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