The Freja satellite mission
Article first published online: 3 JUN 2011
©1993. American Geophysical Union. All Rights Reserved.
Eos, Transactions American Geophysical Union
Volume 74, Issue 29, pages 321–324, 20 July 1993
How to Cite
1993), The Freja satellite mission, Eos Trans. AGU, 74(29), 321–324, doi:10.1029/93EO00394., and (
- Issue published online: 3 JUN 2011
- Article first published online: 3 JUN 2011
Freja, a Swedish and German scientific satellite, was launched successfully on October 6, 1992. Novel plasma instruments give Freja the capability to increase the spatial/temporal resolution orders of magnitudes above that previously achieved on satellites. Freja's high spatial/temporal resolution permits studies of meso- and micro-scale phenomena in the 100-m range for particles and in the 10-m range for electric and magnetic fields. The on-board ultraviolet imager will resolve auroral structures of kilometer size, that is, about an order of magnitude better than Viking (see Figure 1).