HR: 13:40h
AN: SH53B-01 INVITED    [Abstracts]
TI: Characteristics of ³He-rich Solar Energetic Particle Events Derived from in situ Observations
AU: * Wiedenbeck, M E
EM: mark.e.wiedenbeck@jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, M.S. 169-327 4800 Oak Grove Dr., Pasadena, CA 91109, United States
AB: Extensive in situ observations of ³He-rich solar energetic particle (SEP) events were made during cycle 23 using instruments on a variety of spacecraft including ACE, Wind, and SoHO. The combined data set, which has essentially no data gaps over a period of >10 years, has proven useful for both statistical and case studies of these events. The modern instrumentation flown on these spacecraft made it possible to measure: spectra over a broad energy range, abundances of rare elements and of element groups in the upper 2/3 of the periodic table, isotopic composition of several heavy elements, and timing and three-dimensional anisotropy distributions of arriving particles. The advances that have been made in our understanding of ³He-rich SEP event characteristics as the result of these observations will be discussed. In addition, the expected contributions from the STEREO mission, which was launched in late 2006, will be mentioned. This work was supported by NASA under grants NAS5-12929 and NAS5-03131.
DE: 2114 Energetic particles (7514)
DE: 7514 Energetic particles (2114)
DE: 7845 Particle acceleration
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2007 Fall Meeting