Physics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsm53b0411s&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #SM53B-0411
Physics
7827 Kinetic And Mhd Theory, 7835 Magnetic Reconnection, 7843 Numerical Simulation Studies, 7851 Shock Waves, 2149 Mhd Waves And Turbulence
Scientific paper
Test fluid particles are traced on the time-developed MHD simulation field data, in order to study MHD shock waves formed in fast magnetic reconnection. In general, when fast magnetic reconnection is steadily caused in the uniform current sheet, high speed plasma jet is generated by a pair of slow shocks and a plasmoid is formed in the downstream. According to our MHD simulations, when the plasmoid continue to propagate in the current sheet, the slow shock may be separated into two regions, i.e. reconnection jet region and plasmoid region. The reconnection jet is generated by the former slow shock. While, the propagation of the plasmoid is driven by the latter slow shock around the plasmoid. In addition, if the reconnection jet is supersonic, the slow shock in the jet region partially collapses, and then, intermediate waves and expansion waves appear in the jet region. The details of these MHD wave structures which are new features for the fast magnetic reconnection on the basis of MHD theory are reported by using test particle simulation technique.
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