Physics
Scientific paper
Sep 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987soph..107..385k&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 107, no. 2, 1987, p. 385-394.
Physics
18
Energetic Particles, Helium Isotopes, Solar Corona, Solar Cosmic Rays, Solar Flares, Energy Spectra, H Alpha Line, Morphology, Particle Acceleration, Solar X-Rays
Scientific paper
H-alpha, X-ray, and kilometric radio data are used to examine solar coronal activity associated with energetic He-3-rich particle events observed near earth. The basis of the study is the 12 He-3-rich events observed in association with impulsive 2-100 keV electron events reported by Reames et al. (1985). In three or four events, associated H-alpha or X-ray flares were found, and in two events even the metric type III bursts were weak or absent. The measured low energy electron spectra for these events show no evidence of a flattening due to Coulomb collisional losses. These results and several other recent findings are consistent with the idea that the He-3/electron events are due to particle acceleration in the corona well above the associated H-alpha and X-ray flares.
Kahler Stephen W.
Liggett Margaret
Lin Robert P.
Reames Donald. V.
Stone Robert G.
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