Current sheet bifurcation and collapse in electron magnetohydrodynamics

Details Current sheet bifurcation and collapse in electron magnetohydrodynamics Current sheet bifurcation and collapse in electron magnetohydrodynamics

2009-04-20

arxiv.org/abs/0904.3033v1

Physics

Plasma Physics

submitted to publication

Scientific paper

Inertial effects in nonlinear magnetic reconnection are studied within the context of 2D electron magnetohydrodynamics (EMHD) with resistive and viscous dissipation. Families of nonlinear solutions for relevant current sheet parameters are predicted and confirmed numerically in all regimes of interest. Electron inertia becomes important for current sheet thicknesses $\delta$ below the inertial length $d_{e}$. In this case, in the absence of electron viscosity, the sheet thickness experiences a nonlinear collapse. Viscosity regularizes solutions at small scales. Transition from resistive to viscous regimes shows a nontrivial dependence on resistivity and viscosity, featuring a hysteresis bifurcation. In all accessible regimes, the nonlinear reconnection rate is found to be explicitly independent of the electron inertia and dissipation coefficients.

Affiliated with

Also associated with

No associations

Rating

Current sheet bifurcation and collapse in electron magnetohydrodynamics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Current sheet bifurcation and collapse in electron magnetohydrodynamics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current sheet bifurcation and collapse in electron magnetohydrodynamics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-174176