Published 2003 | Version Published
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The Unusual Solar Particle Events of August 2002

Abstract

Several highly unusual solar particle events occurred in August 2002, with high ^3^He/^4He ratios and enormous enhancements of heavy isotopes [5]. By examining proton, electron, and heavy ion intensities, Hα, X-ray, and radio flares and particle arrival times relative to them and to coronal mass ejections, we find that the 20 August 2002 event was the largest impulsive event yet seen in this solar cycle at energies >10 MeV/nucleon.

Additional Information

Copyright Universal Academy Press Inc. This work was funded by NASA at Caltech (under grants NAG5-6912 and NAG5-12929), JPL, and the Goddard Space Flight Center. Details on solar activity and GOES data were obtained from NOAA through the Space Environment Center web site. We thank the ACE/EPAM, Wind/WAVES, and SOHO/LASCO teams for making their data public.

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Eprint ID
56382
Resolver ID
CaltechAUTHORS:20150406-132624126

Funding

NASA
NAG5-6912
NASA
NAG5-12929

Dates

Created
2015-04-15
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Updated
2020-03-09
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Caltech groups
Space Radiation Laboratory
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Space Radiation Laboratory
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2003-11