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arXiv · 1003.0105

Fast magnetic reconnection in three dimensional MHD simulations

Bijia Pang·Ue-Li Pen·Ethan T. Vishniac
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Abstract

We present a constructive numerical example of fast magnetic reconnection in a three dimensional periodic box. Reconnection is initiated by a strong, localized perturbation to the field lines. The solution is intrinsically three dimensional, and its gross properties do not depend on the details of the simulations. $\sim 50%$ of the magnetic energy is released in an event which lasts about one Alfven time, but only after a delay during which the field lines evolve into a critical configuration. We present a physical picture of the process. The reconnection regions are dynamical and mutually interacting. In the comoving frame of these regions, reconnection occurs through an X-like point, analogous to Petschek reconnection. The dynamics appear to be driven by global flows, not local processes.

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Bijia Pang, Ue-Li Pen, Ethan T. Vishniac. 2010-02-27. Fast magnetic reconnection in three dimensional MHD simulations. https://doi.org/10.1063/1.3484874

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