Collisionless Magnetic Reconnection in the Presence of Moderate Guide Fields

Details Collisionless Magnetic Reconnection in the Presence of Moderate Guide Fields Collisionless Magnetic Reconnection in the Presence of Moderate Guide Fields

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm11b..05h&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SM11B-05

Other

0545 Modeling (4255), 2723 Magnetic Reconnection (7526, 7835), 2753 Numerical Modeling, 7835 Magnetic Reconnection (2723, 7526), 7867 Wave/Particle Interactions (2483, 6984)

Scientific paper

The dissipation mechanism of guide field magnetic reconnection remains a subject of intense scientific interest. On one hand, one set of recent studies have shown that particle inertia-based processes, which include thermal and bulk inertial effects, provide the reconnection electric field in the diffusion region. On the other hand, a second set of studies emphasizes the role of wave-particle interactions in providing anomalous resistivity in the diffusion region. In this presentation, we present analytical theory results, as well as three-dimensional PIC simulations of guide-field magnetic reconnection. We will show that the thermal electron inertia-based dissipation mechanism, expressed through nongyrotropic electron pressure tensors, remains viable in three dimensions. In addition, we will pay particular attention to the early phase of the reconnection evolution. In particular, we will present results of a simulation without initial perturbation in order to investigate the processes that lead to the formation of extended reconnection channels.

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