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| Titel |
Remote sensing of local structure of the quasi-perpendicular Earth's bow shock by using field-aligned beams |
| VerfasserIn |
B. Miao, H. Kucharek, E. Möbius, C. Mouikis, H. Matsui, Y. C.-M. Liu, E. A. Lucek |
| 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 ; 27, no. 3 ; Nr. 27, no. 3 (2009-03-02), S.913-921 |
| Datensatznummer |
250016426
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| Publikation (Nr.) |
 copernicus.org/angeo-27-913-2009.pdf |
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| Zusammenfassung |
| Field-aligned ion beams (FABs) originate at the quasi-perpendicular Earth's bow shock and
constitute an important ion population in the foreshock region.
The bulk velocity of these FABs depends significantly
on the shock normal angle, which is the angle between shock normal and upstream
interplanetary magnetic field (IMF). This dependency may therefore be taken as an indicator of
the local structure of the shock. Applying the direct reflection model to
Cluster measurements, we have developed a method that uses proton FABs in the foreshock region
for remote sensing of the local shock structure.
The comparison of the model results with the multi-spacecraft observations of FAB events shows
very good agreement in terms of wave amplitude and frequency of surface waves at the shock front. |
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