In collisionless plasmas, electron inertia has a strong influence on the formation of magnetic islands, through magnetic field line reconnection, and on the dynamics of coherent nonlinear structures such as magnetic vortices. We present a physical model for the nonlinear dynamics of such magnetic structures in configurations with a strong magnetic field. This model includes diamagnetic velocities and ion gyro-radius and electron inertia effects and yields the so-called Reduced MagnetoHydroDynamic (RMHD) equations in the appropriate limit. (C) 1997 COSPAR. Published by Elsevier Science Ltd.
Autori interni: | |
Autori: | Pegoraro F; Kuvshinov BN; Rem J; Schep TJ |
Titolo: | Electron inertia and small-scale magnetic structures in a nonuniform collisionless plasma |
Anno del prodotto: | 1997 |
Digital Object Identifier (DOI): | 10.1016/S0273-1177(97)00083-5 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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