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Journal Articles Nonlinear Processes in Geophysics Year : 2000

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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Dates and versions

hal-00303028 , version 1 (18-06-2008)

Identifiers

  • HAL Id : hal-00303028 , version 1

Cite

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

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