Physics – Plasma Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh23a1532s&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SH23A-1532
Physics
Plasma Physics
[2723] Magnetospheric Physics / Magnetic Reconnection, [7526] Solar Physics, Astrophysics, And Astronomy / Magnetic Reconnection, [7835] Space Plasma Physics / Magnetic Reconnection
Scientific paper
Three-dimensional, multiple, spontaneous, and intermittent fast magnetic reconnection was studied in numerical MHD simulations as a three-dimensional instability of the typical two-dimensional spontaneous fast magnetic reconnection model. In this model, the current-driven anomalous resistivity is assumed and the fast reconnection process is initiated by a three-dimensional resistive perturbation in the one-dimensional current sheet. The resulting fast reconnection process is strongly localized in the sheet current direction, intermittently enhanced, and simultaneously occurs in some places of the current sheet. As a result, magnetic loops, i.e. plasmoids, are repeatedly and randomly ejected. This numerical result is very similar to the intermittent downflows often observed in EUV imager of solar flares. In this paper, in the viewpoint of three-dimensional instability of the reconnection process, the three-dimensional structures and dynamics of neutral lines which can be caused in the one-dimensional current sheet are reported through the numerical and analytical MHD studies.
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