Database of Freja charging events

This is the database of PDF plots of Freja charging events. Please read the guide to the plots for more information.
This page works properly only with Netscape 4 or Internet Explorer 4. There is also another access page without Java.
List of all available plots (LONG)

Choose conditions
Peak charging (negative potential): =< 10 V 10-100 V >=100 V
Light conditions: Sunlight Eclipse Sunset/Sunrise
Duration of event: shortlived: < 30s longlived: >= 30s
Plot type 1 Plot type 2
  • Spectrogram of HF emissions
  • Langmuir probe current
  • Ion data
  • MATE elcetron data (orbit > 1600)
  • TESP electron data (orbit < 730)
  • Enlarged ion data (O+)
  • Eclipse/Sunlight conditions (geometric)
  • Magnetic field direction vs S/C spin axis

Want to convert from Orbit Number to UT (or viceversa)? Click here.