Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm21b..06s&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SM21B-06
Physics
2723 Magnetic Reconnection (7526, 7835), 7526 Magnetic Reconnection (2723, 7835 Magnetic Reconnection (2723, 7526)
Scientific paper
MHD numerical study for spontaneous fast magnetic reconnection is presented. As well-known in two- dimensional numerical MHD studies, if a current-driven anomalous resistivity is assumed, one-dimensional current sheet is destabilized by a resistive perturbation, resulting in two-dimensional fast magnetic reconnection. In this paper, it is shown that such a two-dimensional fast magnetic reconnection process can be moreover destabilized by a three-dimensional resistive perturbation, resulting in three-dimensional fast magnetic reconnection which is strongly localized in sheet current direction. The three-dimensional fast magnetic reconnection process intermittently and randomly ejects three-dimensional plasmoids downstream. This numerical study is applicable for magnetic reconnection problems in geo-magnetotail and solar flares, in which three-dimensional plasmoids are intermittently ejected from one-dimensional current sheet. It fact, this numerical result is very similar to the intermittent downflow observed in solar flares by TRACE"fs EUV instrument.
Kondo Kazuhiro
Shimizu Toshifumi
Ugai Masayuki
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