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| Titel |
Energetic particle observations at the subsolar magnetopause |
| VerfasserIn |
A. A. Eccles, T. A. Fritz |
| 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 ; 20, no. 4 ; Nr. 20, no. 4, S.445-460 |
| Datensatznummer |
250014377
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| Publikation (Nr.) |
 copernicus.org/angeo-20-445-2002.pdf |
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| Zusammenfassung |
The pitch-angle distributions (PAD) of
energetic particles are examined as the ISEE-1 satellite crosses the Earth’s
magnetopause near the subsolar point. The investigation focuses on the possible
existence of a particular type of distribution that would be associated with a
source of energetic particles in the high-latitude magnetosphere. PADs,
demonstrating broad, persistent field-aligned fluxes filling a single
hemisphere (upper/northern or lower/southern), were observed just sunward of
the magnetopause current layer for an extended period of many minutes. These
distributions are a direct prediction of a possible source of energetic
particles located in the high altitude dayside cusp and we present five
examples in detail of the three-dimensional particle distributions to
demonstrate their existence. From these results, other possible causes of such
PADs are examined.
Key words. Magnetospheric physics (energetic
particles, precipitating; magnetopause, cusp and boundary layers;
magnetospheric configuration and dynamics) |
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