Computer Science
Scientific paper
Mar 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1216..687c&link_type=abstract
TWELFTH INTERNATIONAL SOLAR WIND CONFERENCE. AIP Conference Proceedings, Volume 1216, pp. 687-690 (2010).
Computer Science
Sunspots, Spacecraft, Solar Flares, Shock Waves, Corona, Sun Spots, Solar Cycles, Spacecraft/Atmosphere Interactions, Flares, Planetary Bow Shocks, Interplanetary Shocks, Corona
Scientific paper
Around 350 solar energetic proton events with energies >20 MeV were detected by near-Earth spacecraft during solar cycle 23. Focusing on the 280 events with ~25 MeV intensity >2×10-4particles/(cm23 sr s MeV), we examine the early stages (~first 12 hours) of these events including their intensity and composition and the properties of the related solar phenomena such as CMEs, flares and radio bursts. Although we divide the events into 5 representative groups based on particle profiles and relative abundances, we find no single, or set of variables that divides the particle events into clear cut ``classes'' for example associated with shock and flare acceleration. In particular, there is a continuum of event properties from the smallest, flare-accelerated events, to the largest events dominated by shock acceleration. This suggests that both flare and shock acceleration can contribute in individual events.
Cane Hilary V.
Richardson Ian G.
von Rosenvinge Tycho T.
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