Other
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sm31a04h&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #SM31A-04 INVITED
Other
2753 Numerical Modeling, 7827 Kinetic And Mhd Theory, 7835 Magnetic Reconnection
Scientific paper
The importance of magnetic reconnection as a transport mechanism in space plasmas has been established beyond a doubt by spacecraft observations and theory and modeling. In collisionless systems, such as found in many space plasmas, magnetic reconnection provides large-scale transport and energy conversion based on microscopic dissipation processes. These processes rely either on wave particle interactions or statistical motions on particles in the reconnection region proper. Recent modeling, relying on translationally invariant approaches, has favored the latter process. In a more general, three-dimensional situation, more dissipation processes are allowed and consequently, reconnection might involve other dissipation processes. We investigate the magnetic reconnection process by means of fully electromagnetic, three-dimensional particle-in-cell simulations. We compare simulation results to analytical estimates to argue that magnetic reconnection in three-dimensions occurs in channels extended by at least several ion inertial lengths. We find that the ion motion in the reconnected magnetic field gives the size of these channels, and thus that oblique modes grow in the system. The simulations show excellent agreement between analytical results [Quest and Coroniti, 1985] and the simulated evolution.
Birn Joachim
Hesse Matthias
Kuznetsova Masha
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