Physics
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsh32a..10v&link_type=abstract
American Geophysical Union, Spring Meeting 2002, abstract #SH32A-10
Physics
7513 Coronal Mass Ejections, 7519 Flares, 2118 Energetic Particles, Solar, 2139 Interplanetary Shocks
Scientific paper
The abundances of elements from Helium to Nickel have now been observed in over 40 different solar energetic particle events using the Solar Isotope Spectrometer (SIS) on-board the Advanced Composition Explorer (ACE). We have previously reported on substantial temporal variations of the observed abundances within events and from event to event for events through the end of year 2000. The behavior of these events appeared to have a dependence on the solar longitude of the active regions which produced the events. Events with little time variation and with heavy element enhancements similar to those of impulsive events tended to be well-connected, suggesting that they might include flare-accelerated particles. Events from central meridian appeared to have larger time variations and were less likely to have heavy element enhancements, suggesting that they might be dominated by shock-accelerated particles. We have now extended our study to include events to the end of year 2001 and will report on how these events fit into this picture.
Christian Eric
Cohen Charon
Cummings Alan
Leske Richard
Mewaldt Richard
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