Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986georl..13..205g&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 13, March 1986, p. 205-208. NASA-supported research.
Astronomy and Astrophysics
Astrophysics
22
Charged Particles, Earth Magnetosphere, Magnetic Field Reconnection, Particle Acceleration, Solar Flares, Solar Wind, Free Energy, Magnetic Storms, Solar Terrestrial Interactions
Scientific paper
A possible source of free energy available for accelerating charged particles is conversion of magnetic energy to particle energy in reconnecting magnetic fields. Recent simulations using test particles suggests that reconnection may efficiently accelerate particles to the maximum energies that are observed in several astrophysical contexts. A simple analytic formula is used in conjunction with the simulation results to predict the maximum energy achievable in a particular plasma environment with the result that in solar flares reconnection is capable of accelerating particles to several GeV. In magnetospheric substorms the predicted maximum can reach several hundred keV, and near magnetic sector crossings in the solar wind the maximum energy can approach 100 keV.
Ambrosiano John J.
Goldstein Michel L.
Matthaeus William H.
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