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| Titel |
Dense ion clouds of 0.1 - 2 keV ions inside the CPS-region observed by Astrid-2 |
| VerfasserIn |
S. H. Høymork, M. Yamauchi, Y. Ebihara, Y. Narita, O. Norberg, D. Winningham |
| 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 ; 19, no. 6 ; Nr. 19, no. 6, S.621-631 |
| Datensatznummer |
250014274
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| Publikation (Nr.) |
 copernicus.org/angeo-19-621-2001.pdf |
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| Zusammenfassung |
Data from the Astrid-2
satellite taken between April and July 1999 show several examples of dense ion
clouds in the 0.1–2 keV energy range inside the inner mag-netosphere, both in
the northern and southern hemispheres. These inner magnetospheric ion clouds
are found predomi-nantly in the early morning sector, suggesting that they
could have originated from substorm-related ion injections on the night side.
However, their location and density show no cor-relation with Kp, and
their energy-latitude dispersion is not easily reproduced by a simple particle
drift model. There-fore, these ion clouds are not necessarily caused by
substorm-related ion injections. Alternative explanations for the ion clouds
are the direct solar wind injections and up-welling ions from the other
hemisphere. These explanations do not, however, account for all of the
observations.
Key words. Magnetospheric physics
(energetic particles, trapped; magnetospheric configuration and dynamics; storm
and substorms) |
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