Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm21b0550t&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SM21B-0550
Physics
2704 Auroral Phenomena (2407)
Scientific paper
This computer-simulation study is motivated by recent spacecraft observations in the auroral ionosphere of field-aligned density depletions (FREJA) having short transverse scale and of kinetic structures moving at the electron thermal speed (FAST). An electromagnetic PIC code that follows the relativistic, magnetized dynamics of electron and ions is used to examine the nonlinear plasma structures that are formed when a density filament is driven at supersonic speed along the geomagnetic field. It is found that the ambient plasma allows the ballistic outflow of fast electrons and results into a moving, dipolar-current system that generates a 3-D magnetic topology. The field-aligned currents develop small-scale, large potential structures that generate ion distribution functions with large velocity spread. The moving filament carves out a trailing, deep density channel in the ambient plasma. This work is sponsored by ONR and NSF.
Leboeuf J.
Morales G. J.
Tsung F. S.
No associations
LandOfFree
Structures Formed by Supersonic Density Filaments 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 Structures Formed by Supersonic Density Filaments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Structures Formed by Supersonic Density Filaments will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1438370