LFEW is a low frequency electromagnetic wave detector mounted on TC-2, whichcan measure the magnetic fluctuation of low frequency electromagnetic waves.The frequency range is 8 Hz to 10 kHz. LFEW comprises a boom-mounted,three-axis search coil magnetometer, a preamplifier and an electronics boxthat houses a Digital Spectrum Analyzer. LFEW was calibrated atChambon-la-Forêt in France. The ground calibration results show that theperformance of LFEW is similar to that of STAFF on TC-1. The first resultsof LFEW show that it works normally on board, and that the AC magneticinterference of the satellite platform is very small. In the plasmasphere,LFEW observed the ion cyclotron waves. During the geomagnetic storm on8 November 2004, LFEW observed a wave burst associated with the oxygen ion cyclotronwaves. This observation shows that during geomagnetic storms, the oxygenions are very active in the inner magnetosphere. Outside the plasmasphere,LFEW observed the chorus on 3 November 2004. LFEW also observed theplasmaspheric hiss and mid-latitude hiss both in the Southern Hemisphere andNorthern Hemisphere on 8 November 2004. The hiss in the Southern Hemisphere maybe the reflected waves of the hiss in the Northern Hemisphere.
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