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| Titel |
Long-duration high-energy proton events observed by GOES in October 1989 |
| VerfasserIn |
A. Anttila, L. G. Kocharov, J. Torsti, R. Vainio |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 16, no. 8 ; Nr. 16, no. 8, S.921-930 |
| Datensatznummer |
250013389
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| Publikation (Nr.) |
 copernicus.org/angeo-16-921-1998.pdf |
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| Zusammenfassung |
We consider the prolonged injection of the
high-energy (>10 MeV) protons during the three successive events observed by
GOES in October 1989. We apply a solar-rotation-stereoscopy approach to study
the injection of the accelerated particles from the CME-driven interplanetary
shock waves in order to find out how the effectiveness of the particle
acceleration and/or escape depends on the angular distance from the shock axis.
We use an empirical model for the proton injection at the shock and a standard
model of the interplanetary transport. The model can reproduce rather well the
observed intensity–time profiles of the October 1989 events. The deduced proton
injection rate is highest at the nose of the shock; the injection spectrum is
always harder near the Sun. The results seem to be consistent with the scheme
that the CME-driven interplanetary shock waves accelerate a seed particle
population of coronal origin.
Key words. Interplanetary physics · Energetic
particles · Solar physics · astrophysics and astronomy · Flares and mass
ejections |
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