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| Titel |
Dusk side Pc5 waves observed by THEMIS |
| VerfasserIn |
D. Constantinescu, F. Plaschke, K.-H. Glassmeier, U. Auster, V. Angelopoulos, W. Baumjohann, K.-H. Fornacon, E. Georgescu, R. Nakamura, Y. Narita |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250028479
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| Zusammenfassung |
| We present a statistical study of THEMIS observations of compressional ULF waves
in the outer equatorial dusk side magnetosphere.
Using a timing technique combined with minimum variance analysis we determine
the propagation direction and speed of the waves with respect to the spacecraft
formation. We then apply a Doppler correction and find that the waves are
propagating orthogonal to the ambient magnetic field, in the Sunward direction,
with low (up to 30 km/s) phase speeds in the plasma frame.
Variance analysis reveals that the maximum variance direction is closely aligned
with the mean magnetic field which, together with their low propagation speed
and orthogonal propagation, is consistent with the drift mirror mode. |
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