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| Titel |
Compressional Pc5 type pulsations in the morningside plasma sheet |
| VerfasserIn |
A. Vaivads, W. Baumjohann, G. Haerendel, R. Nakamura, H. Kucharek, B. Klecker, M. R. Lessard, L. M. Kistler, T. Mukai, A. Nishida |
| 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. 3 ; Nr. 19, no. 3, S.311-320 |
| Datensatznummer |
250014220
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| Publikation (Nr.) |
 copernicus.org/angeo-19-311-2001.pdf |
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| Zusammenfassung |
We study compressional
pulsations in Pc5 frequency range observed in the dawn-side at distances of
about 10 RE , close to the magnetic equator. We use data obtained during two
events of conjunctions between Equator-S and Geotail: 1000–1700 UT on 9 March
1998, and 0200–0600 UT on 25 April 1998. In both events, pulsations are
observed after substorm activity. The pulsations are antisymmetric with respect
to the equatorial plane (even mode), and move eastward with phase velocity close
to plasma velocity. The pulsations tend to be pressure balanced. We also discuss
possible generation mechanisms of the pulsations.
Key words. Magnetospheric physics (magnetospheric
configuration and dynamics; MHD waves and instabilities; plasma sheet) |
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