Physics – Plasma Physics
Scientific paper
Nov 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jgra..107.1373l&link_type=abstract
Journal of Geophysical Research (Space Physics), Volume 107, Issue A11, pp. SMP 17-1, CiteID 1373, DOI 10.1029/2002JA009308
Physics
Plasma Physics
Magnetospheric Physics: Storms And Substorms, Magnetospheric Physics: Plasma Sheet, Space Plasma Physics: Magnetic Reconnection, Magnetospheric Physics: Magnetotail, Magnetospheric Physics: Numerical Modeling
Scientific paper
A global two-dimensional hybrid simulation is carried out to study the evolution of the near-Earth plasma sheet. It is shown that reconnection X lines and plasmoids can be generated by diverging flows in the plasma sheet. These diverging flows can be caused by variations in the Maxwell stress due to variations of Bx and Bz components of the magnetic field outside the current sheet. In addition, the flow acceleration/deceleration in the plasma sheet can also be caused by variations in the local plasma mass density. Comparison runs have been made with a Harris model current sheet with zero Bz, and no evidence of reconnection is found. The results indicate that divergent plasma flow is a sufficient condition for reconnection even in a dissipation-less plasma.
Lin Yangtin
Swift Daniel W.
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