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Ann. Geophys., 17, 1622-1625, 1999
www.ann-geophys.net/17/1622/1999/
© European Geosciences Union 1999
Magnetic storm acceleration of radiation belt electrons observed by the Scintillating Fibre Detector (SFD) onboard EQUATOR-S
M. Cyamukungu1, C. Lippens2, L. Adams3, R. Nickson3, C. Boeder4, V. Pierrard2, E. Daly3, Gh. Grégoire1, and J. Lemaire2
1UCL - Institut de Physique Nucléaire, Chemin du Cyclotron 2, B-1348 Louvain-la-Neuve, Belgium
2BIRA/IASB - Avenue Circulaire 3, B-1180 Uccle, Belgium
3ESA/ESTEC - P.O. Box 299, Keplerlaan 1, 2200 AG Noordwijk, The Netherlands
4SENSYS - P.O. Box 411, 2201 AG Noordwijk, The Netherlands
Abstract. On the basis of the currents induced by
electron fluxes in the Scintillating Fibre Detector (SFD) onboard the EQUATOR-S
satellite launched on 2 December 1997, an in-situ acceleration of radiation belt
electrons is found to possibly contribute to the increase of the flux of
electrons with energies greater than 400 keV. The data acquired between 16
December 1997 and 30 April 1998 on the 500–67300 km, 4° inclination EQUATOR-S
orbit show that the increase of the energetic electron flux corresponds to the
enhanced geomagnetic activity measured through the Dst index.
Key words. Magnetospheric physics (energetic particles
· trapped; storms and substorms; instruments and techniques)
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