University of Minnesota
School of Physics & Astronomy

Publications

Collisionless Magnetic Reconnection via Alfven Eigenmodes

                                                       

by Lei Dai in Physical Review Letters, vol. 102, Issue 24, 2009

We propose an analytic approach to the problem of collisionless magnetic reconnection formulated as a process of Alfven eigenmodes’ generation and dissipation. Alfven eigenmodes are confined by the current sheet in the same way that quantum mechanical waves are confined by the tanh2 potential. The dynamical time scale of reconnection is the system scale divided by the eigenvalue propagation velocity of the n=1 mode. The prediction of the n=1 mode shows good agreement with the in situ measurement of the reconnection-associated Hall fields.

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