34th Solar Physics Division Meeting, June 2003
Session 16 Flares and Microflares II
Poster, Wednesday, June 18, 2003, 3:30-5:00pm, Mezzanine

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[16.07] Statistical Properties of Solar Impulsive Electron Events

P. Oakley, S. Krucker, R. P. Lin (Space Sciences Lab, University of California, Berkeley)

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.


The author(s) of this abstract have provided an email address for comments about the abstract: bezerkly@ssl.berkeley.edu

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Bulletin of the American Astronomical Society, 35 #3
© 2003. The American Astronomical Soceity.