Physics
Scientific paper
Apr 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.5607k&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A4, p. 5607-5615.
Physics
23
Energetic Particles, Satellite Observation, Solar Corona, Solar Cosmic Rays, Solar Flares, Stellar Mass Ejection, Goes Satellites, H Alpha Line, Noaa Satellites
Scientific paper
We have surveyed the risetimes of all E greater than 15 MeV solar energetic proton (SEP) events observed on the NOAA GOES spacecraft between 1984 and 1989 and associated with well-connected (W20-W70) solar flares. Twelve events occurred during the times of observations by the coronagraph on the SMM spacecraft, and each event was associated with a coronal mass ejection (CME) observed above the west limb. In each of the three SEP events with the longest flux risetimes a second CME was observed before the time of peak flux. While all the initial CMEs were associated with prominent solar flares, the subsequent CMEs were not accompanied by obvious X-ray or radio bursts. We interpret the long risetimes of two of the three SEP events in terms of a second SEP injection due to the second CME.
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