Statistics – Applications
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsh52a0443l&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SH52A-0443
Statistics
Applications
7519 Flares, 7807 Charged Particle Motion And Acceleration, 7835 Magnetic Reconnection
Scientific paper
Particle acceleration associated with three-dimensional magnetic reconnection is discussed. Orbits of charged particles in the current sheet located in the fan of a magnetic null point are described analytically in both nonrelativistic and ultrarelativistic limits. An orbit instability effect is identified, which limits the acceleration times and kinetic energy gains in the reconnection-related electric field. The results are discussed using exact MHD solutions for fan reconnection, discovered by I.J.D. Craig and co-workers. The use of an analytical self-consistent MHD solution to derive the magnetic field configuration near the null point allows one to constrain local parameters in the magnetic reconnection region. As a consequence, simple conditions can be identified for effective particle acceleration in realistic reconnecting geometries. Applications to acceleration processes in solar flares are discussed.
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