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Ann. Geophys., 17, 1521-1527, 1999
www.ann-geophys.net/17/1521/1999/
© European Geosciences Union 1999
The magnetic field experiment onboard Equator-S and its scientific possibilities
K.-H. Fornacon1, H. U. Auster1, E. Georgescu2,3, W. Baumjohann2, K.-H. Glassmeier1, G. Haerendel2, J. Rustenbach2, and M. Dunlop4
1Institut für Geophysik und Meteorologie der Technischen Universität, D-38106 Braunschweig, Germany
2Max-Planck-Institut für extraterrestrische Physik, D-85740 Garching, Germany
3Institute of Space Sciences, Bucharest, Romania
4Imperial College, London SW7 2BZ, UK
Abstract. The special feature of the ringcore fluxgate
magnetometer on Equator-S is the high time and field resolution. The scientific
aim of the experiment is the investigation of waves in the 10–100 picotesla
range with a time resolution up to 64 Hz. The instrument characteristics and the
influence of the spacecraft on the magnetic field measurement will be discussed.
The work shows that the applied pre- and inflight calibration techniques are
sufficient to suppress spacecraft interferences. The offset in spin axis
direction was determined for the first time with an independent field
measurement by the Equator-S Electron Drift Instrument. The data presented gives
an impression of the accuracy of the measurement.
Key words. Magnetospheric physics (instruments and
techniques) · Space plasma physics (instruments and techniques)
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