Physics
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aas...21115905o&link_type=abstract
American Astronomical Society, AAS Meeting #211, #159.05
Physics
Scientific paper
In many astro- and space- physics situations, we observe energy release processes in vicinities of an obstacle. In the Earth's magnetotail, an Earthward plasma flow hits the magnetosphere which might end up with magnetic field pile-up and/or dipolarization of the magnetosphere. During solar flares, in view of magnetic reconnection model, a downward plasma jet collides with a magnetic flux tube at the bottom of the solar corona.In order to study energe release processes in these situations, we have set up a hard wall (symmetric boundary) to model either dipole magnetic field in the Earth's magnetosphere or magnetic loops in the solar corona. For simplicity, we have neglected any density gradient or magnetic field strucures. The initial configuration of the current sheet is therefore of a Harris-type. After initiating magnetic reconnection by a magnetic field purturbation, its time evolution is studied by means of full particle, PIC simulation.The prominent feature in our simulation is a slow motion of the X-point directing away from the wall, which we call `X-line Retreat'. Our preliminary results show retreat speed to be about 0.1 times the Alfven speed measured at the boundaries. In our talk, we will discuss the mechanism and cause of the X-line retreat as well as the structures of the diffusion region. Implication on particle acceleration will also be addressed.
Fujimoto Minoru
Oka Mitsuo
Shinohara Iku
No associations
LandOfFree
X-Line Retreat During 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 X-Line Retreat During Magnetic Reconnection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-Line Retreat During Magnetic Reconnection will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1035610