Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsh42a0770o&link_type=abstract
American Geophysical Union, Fall Meeting 2001, abstract #SH42A-0770
Physics
7514 Energetic Particles (2114)
Scientific paper
A statistical survey of 391 impulsive electron events (1-300~keV) observed at 1 AU by the 3-D Plasma and Energetic Particles experiment on the WIND spacecraft is presented. The data was taken during the first 7 years of operations of the WIND spacecraft covering the last solar minimum and maximum. Two main results are presented: (a) The event frequency distribution as a function of peak flux is found to be a power law with an index around -1.4 over 3 orders of magnitude. Assuming the peak flux is proportional to the total energy released in an event, this result suggests that the few big events are energetically most important. (b) In most events, the peak flux spectra in the energy range of 1-300 keV can be fitted with a double power law with a turnover energy around 50~keV. The averaged slope at lower energies is around -1.8 and it steepens at higher energies to an average value of -3.3
Krucker Sa"m
Lin Robert P.
Oakley Phillip H.
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