Energetic particle observations near Ganymede

Details Energetic particle observations near Ganymede Energetic particle observations near Ganymede

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999jgr...10417459p&link_type=abstract

Journal of Geophysical Research, Volume 104, Issue A8, p. 17459-17470

Physics

21

Planetology: Solar System Objects: Jovian Satellites, Planetology: Fluid Planets: Magnetospheres, Magnetospheric Physics: Energetic Particles, Precipitating, Planetology: Fluid Planets: Surfaces

Scientific paper

This paper combines data from the Galileo spacecraft plasma and energetic particle instruments. Data are included from two Ganymede flybys when the spacecraft was at northern Ganymede latitudes. Electron intensities from the two instruments are in very good agreement. Fits to 60 electron energy spectra are presented. We find the power of precipitating 0.5-3.0 keV electrons into both polar caps of Ganymede is ~3×109W. By assuming the instruments are intercalibrated, we infer that sulfur dominates the ion intensities at least in the tens of keV energy range. Furthermore, fits to the ion data indicate that the intensities are dominated by heavy ions below about 100 keV. Fits to these data are also used to estimate the sputtering rate of Ganymede's icy surface. It is found that ~2×1026 water molecules/s are sputtered from Ganymede's polar caps which, when not redeposited on the surface, give an erosion rate of ~8 m/Gyr.

Affiliated with

Also associated with

No associations

Rating

Energetic particle observations near Ganymede does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Energetic particle observations near Ganymede, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energetic particle observations near Ganymede will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1268989