Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apj...577l..63b&link_type=abstract
The Astrophysical Journal, Volume 577, Issue 1, pp. L63-L66.
Astronomy and Astrophysics
Astronomy
19
Acceleration Of Particles, Ism: Cosmic Rays, Magnetic Fields, Methods: Laboratory, Magnetohydrodynamics: Mhd, Plasmas
Scientific paper
Magnetic reconnection is widely believed responsible for heating the solar corona as well as for generating X-rays and energetic particles in solar flares. On astrophysical scales, reconnection in the intergalactic plasma is a prime candidate for a local source (<100 Mpc) of cosmic rays exceeding the Greisen-Zatsepin-Kúzmin cutoff (~1019 eV). In a laboratory astrophysics experiment, we have made the first observation of particles accelerated by magnetic reconnection events to energies significantly above both the thermal and the characteristic magnetohydrodynamic energies. These particles are correlated temporally and spatially with the formation of three-dimensional magnetic structures in the reconnection region.
Brown Richard M.
Cothran C. D.
Landreman Matt
Matthaeus William H.
Schlossberg David
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