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Ann. Geophys., 19, 1439-1447, 2001
www.ann-geophys.net/19/1439/2001/
© European Geosciences Union 2001
Cluster as a wave telescope – first results from the fluxgate magnetometer
K.-H. Glassmeier1, U. Motschmann2, M. Dunlop3, A. Balogh3, M. H. Acuña4, C. Carr3, G. Musmann1, K.-H. Fornaçon1, K. Schweda1, J. Vogt1, E. Georgescu5, and S. Buchert6
1Institut für Geophysik und Meteorologie, Technische Universität Braunschweig, Germany
2Institut für Theoretische Physik, Technische Universität Braunschweig, Germany
3Space and Atmospheric Physics Group, Imperial College, London, United Kingdom
4Goddard Space Flight Center, Greenbelt, USA
5Max-Planck-Institut für extraterrestrische Physik, Garching, München, Germany
6Swedisch Space Research Institute, Uppsala, Sweden
Abstract. The four Cluster
spacecraft provide an excellent opportunity to study spatial structures in the
magnetosphere and adjacent regions. Propagating waves are amongst the
interesting structures and for the first time, Cluster will allow one to
measure the wave vector of low-frequency fluctuations in a space plasma. Based
on a generalized minimum variance analysis wave vector estimates will be
determined in the terrestrial magnetosheath and the near-Earth solar wind. The
virtue and weakness of the wave telescope technique used is discussed in
detail.
Key words. Electromagnetics (wave
propagation) – Magnetospheric physics (MHD waves and instabilities; plasma
waves and instabilities)
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