Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009apj...707..420s&link_type=abstract
The Astrophysical Journal, Volume 707, Issue 1, pp. 420-427 (2009).
Astronomy and Astrophysics
Astronomy
12
Mhd, Sun: Flares
Scientific paper
Three-dimensional instability of the spontaneous fast magnetic reconnection is studied with magnetohydrodynamics (MHD) simulation, where the two-dimensional model of the spontaneous fast magnetic reconnection is destabilized in three dimensions. In two-dimensional models, every plasma condition is assumed to be uniform in the sheet current direction. In that case, it is well known that the two-dimensional fast magnetic reconnection can be caused by current-driven anomalous resistivity, when an initial resistive disturbance is locally put in a one-dimensional current sheet. In this paper, it is studied whether the two-dimensional fast magnetic reconnection can be destabilized or not when the initial resistive disturbance is three dimensional, i.e., that which has weak fluctuations in the sheet current direction. According to our study, the two-dimensional fast magnetic reconnection is developed to the three-dimensional intermittent fast magnetic reconnection which is strongly localized in the sheet current direction. The resulting fast magnetic reconnection repeats to randomly eject three-dimensional magnetic loops which are very similar to the intermittent downflows observed in solar flares. In fact, in some observations of solar flares, the current sheet seems to be approximately one dimensional, but the fast magnetic reconnection is strongly localized in the sheet current direction, i.e., fully three dimensional. In addition, the observed plasma downflows as snake-like curves. It is shown that those observed features are consistent with our numerical MHD study.
Kondo Kazuhiro
Shibata Kazunari
Shimizu Toshifumi
Ugai Masayuki
No associations
LandOfFree
Magnetohydrodynamics Study of Three-Dimensional Fast Magnetic Reconnection for Intermittent Snake-Like Downflows in Solar Flares does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Magnetohydrodynamics Study of Three-Dimensional Fast Magnetic Reconnection for Intermittent Snake-Like Downflows in Solar Flares, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetohydrodynamics Study of Three-Dimensional Fast Magnetic Reconnection for Intermittent Snake-Like Downflows in Solar Flares will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1882553