Near-relativistic Electron Events and Their Solar Associations During Solar Cycle 23

Details Near-relativistic Electron Events and Their Solar Associations During Solar Cycle 23 Near-relativistic Electron Events and Their Solar Associations During Solar Cycle 23

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsh11a0369h&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SH11A-0369

Physics

7513 Coronal Mass Ejections (2101), 7514 Energetic Particles (2114), 7519 Flares, 7524 Magnetic Fields, 7534 Radio Emissions

Scientific paper

Processes in the solar corona are prodigious accelerators of near-relativistic electrons. Only a small fraction of these electrons escape the low corona, yet they are by far the most abundant species observed in Solar Energetic Particle events. These beam-like energetic electron events are sometimes time-associated with coronal mass ejections from the western solar hemisphere. However, a significant number of events are observed without any apparent association with a transient event. The relationship between solar energetic particle events, coronal mass ejections, and near-relativistic electron events was the topic of a grant from NASAs Living with a Star program (NAG5-12479). The relationships are better ordered when we classify the intensity time profiles during the duration of the beam-like anisotropies into three broad categories: 1) Spikes (rapid and equal rise and decay); 2) Pulses (rapid rise, slower decay); and 3) Ramps (rapid rise followed by a plateau). We report on the results of this study that is based on our catalog (covering nearly the complete solar cycle) of 204 near-relativistic electron events observed by ACE/EPAM and their association with: solar electromagnetic emissions, coronal mass ejections, and near-relativistic protons.

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