Induced tearing mode instability as a source of flux transfer events

Details Induced tearing mode instability as a source of flux transfer events Induced tearing mode instability as a source of flux transfer events

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9518861p&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Nov. 1, 1990, p. 18861-18869. Research supported by NNSFC.

Physics

19

Flux Transfer Events, Magnetohydrodynamics, Space Plasmas, Tearing Modes (Plasmas), Vortices, Ampte (Satellites), Magnetopause, Simulation

Scientific paper

A two-dimensional MHD simulation is performed to investigate the evolution and the asymptotic quasi-static state (AQSS) of the vortex-induced tearing mode instability (VITM) at the magnetospheric boundary. The original VITM model is extended by including By, a magnetic field component along the invariant direction, and varying N, the number density, which makes the model applicable to a wide region on the dayside magnetopause. The AQSS is found to be characterized by a large-scale magnetic island together with a colocated vortex tube. The structure of the magnetic island is studied and compared with observations. The possible role of the VITM in the formation of flux transfer events is discussed.

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