First high-resolution measurements by the Freja satellite.
Abstract
The joint Swedish-German Freja satellite was successfully launched on October 6, 1992. Freja contains an extensive set of plasma and field instruments for high time-resolution measurements of the auroral plasma in the altitude range 600 - 1750 km. The satellite also contains two UV imagers to monitor the auroral activity at the geomagnetic footprint of the satellite. In this paper the authors review the first few months of operation and the first scientific data from the Freja experiments. Of particular interest are the density cavities observed within the auroral energization region and the rather unique perspective obtained from the Freja orbit.
- Publication:
-
Geophysical Monograph Series
- Pub Date:
- 1994
- DOI:
- 10.1029/GM084p0247
- Bibcode:
- 1994GMS....84..247L
- Keywords:
-
- Space Research: Earth Magnetosphere;
- Space Research: Aurorae