Physics
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsm21b0197l&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #SM21B-0197
Physics
2744 Magnetotail, 2772 Plasma Waves And Instabilities, 2788 Storms And Substorms, 7839 Nonlinear Phenomena, 7843 Numerical Simulation Studies
Scientific paper
By performing three-dimensional kinetic simulations of Harris current sheets, we study the structure of plasma sheet in the Earth's magnetotail. The current sheet is strongly altered by kinking before tearing modes develop. Kinking explains the satellite observations of both flapping of the current sheet and current bifurcation, which have been detected by ISEE1/2, Geotail, and Cluster satellites. The simulation results and the satellite observations show a remarkable agreement. Reconnection is then triggered by the kinking of the current sheet. We study how initially localized reconnection propagates in the current aligned direction, and how kinetic effects result in different dynamics from those reported by Huba and Rudakov's using a Hall-MHD model [Phys. Plasmas 9, 4435 (2002)].
Brackbill J. U.
Lapenta Giovanni
Ricci Paolo
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