Fast Three Dimensional Magnetic Reconnection

Details Fast Three Dimensional Magnetic Reconnection Fast Three Dimensional Magnetic Reconnection

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...180.0510s&link_type=abstract

American Astronomical Society, 180th AAS Meeting, #05.10; Bulletin of the American Astronomical Society, Vol. 24, p.735

Astronomy and Astrophysics

Astronomy

Scientific paper

Fast driven reconnection was studied in a three dimensional axially bounded magnetic flux tube, which modeled a solar coronal loop. The magnetic field lines of the loop are twisted by photospheric motion, which causes magnetic reconnection. The reconnection process was studied in numerical simulations and in a simple analytic model. Reconnection occured on a time scale of log eta , where eta is the resistivity. Simulations were carried out for a cylindrical flux tube with a helical magnetic field, and also for a sheared slab magnetic field. In the simulations, an intense current sheet formed along a stagnation line of the velocity field, which coincided with a magnetic field line and was the locus of magnetic field reconnection. The reconnection was not steady. The current density in the current sheet rose exponentially in time, reached a peak value, and rapidy decayed. The peak current density scaled inversely with resistivity. The time to reach the peak current density, which can be identified as the reconnection time, had a Petschek like scaling. This was the first demonstration of this scaling in 3D. A simple analytic 1D stagnation flow reconnection model can explain the scaling of peak current and reconnection time.

Affiliated with

Also associated with

No associations

Rating

Fast Three Dimensional Magnetic Reconnection 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 Fast Three Dimensional Magnetic Reconnection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fast Three Dimensional Magnetic Reconnection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1512226