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Kinetic simulations of the coupling between current instabilities and reconnection in thin current sheets

Abstract : We investigate the coupling between current and tearing instability modes of a thin current sheet using the particle code GISMO. We identify pure tearing modes (kx != 0), instabilities in the current flow direction (ky != 0) and general 3D reconnection modes (kx != 0 and ky != 0). Our results give evidence that the coupling between tearing modes and current instabilities plays an important role for spontaneous magnetic reconnection. These modes give a substantial contribution to magnetic reconnection, additional to the well known 2D tearing mode. When allowing reconnection to occur in three spatial dimensions, a configuration, which was initially invariant in the current How direction, develops into a configuration with no invariant direction.
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https://hal.archives-ouvertes.fr/hal-00303028
Contributor : Publication EGU Connect in order to contact the contributor
Submitted on : Saturday, January 1, 2000 - 8:00:00 AM
Last modification on : Saturday, August 25, 2018 - 11:54:01 AM
Long-term archiving on: : Monday, May 31, 2010 - 8:01:33 PM

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  • HAL Id : hal-00303028, version 1

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T. Wiegelmann, J. Büchner. Kinetic simulations of the coupling between current instabilities and reconnection in thin current sheets. Nonlinear Processes in Geophysics, European Geosciences Union (EGU), 2000, 7 (3/4), pp.141-150. ⟨hal-00303028⟩

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