Onset of fast magnetic reconnection via subcritical bifurcation
نویسندگان
چکیده
We report a phase transition model for the onset of fast magnetic reconnection. By investigating the joint dynamics of streaming instability (i.e., current driven ion acoustic in this paper) and current gradient driven whistler wave prior to the onset of fast reconnection, we show that the nonlinear evolution of current sheet (CS) can be described by a Landau-Ginzburg equation. The phase transition from slow reconnection to fast reconnection occurs at a critical thickness, 1c ≃ √2 vthe de, where vthe is π vc electron thermal velocity and vc is the velocity threshold of the st ∣
منابع مشابه
Broad current sheets, current bifurcation, and collisionless reconnection—An Opinion on “Onset of fast magnetic reconnection via subcritical bifurcation” by Z. Guo and X. Wang
Citation: Treumann RA and Baumjohann W (2015) Broad current sheets, current bifurcation, and collisionless reconnection—An Opinion on " Onset of fast magnetic reconnection via subcritical bifurcation " by Z. Magnetic reconnection in current carrying plasmas, in particular when the plasma is collisionless, is an efficient channel of dissipating the energy temporarily stored in electric currents ...
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