Statistical Properties of Solar Impulsive Electron Events

Details Statistical Properties of Solar Impulsive Electron Events Statistical Properties of Solar Impulsive Electron Events

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spd....34.1607o&link_type=abstract

American Astronomical Society, SPD meeting #34, #16.07; Bulletin of the American Astronomical Society, Vol. 35, p.833

Astronomy and Astrophysics

Astronomy

Scientific paper

This is a statistical study with the WIND 3DP instrument of 509 solar impulsive electron events from 1994 to 2001. We analyze and compare the peak flux spectra, the presence of Langmuir waves, the frequency distribution of events and the time delay between the injection of electrons and the emission of the related radio type III bursts. Our most interesting finding is that electron events occurring during a radio type II burst show significantly harder spectra, indicating that shocks with type II bursts might be more efficient at accelerating higher energy particles.
We also observed that the number of events seen only at low energies increases after the peak of the solar cycle has passed, while the number of events seen only at higher energies peaks with the solar cycle. Solar wind density is not observed to play any role in determining at what energies a solar event is visible.

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