ULYSSES measurements of energetic H3 molecules in Jupiter's magnetosphere

Details ULYSSES measurements of energetic H3 molecules in Jupiter's magnetosphere ULYSSES measurements of energetic H3 molecules in Jupiter's magnetosphere

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....9821145l&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A12, p. 21,145-21,149

Astronomy and Astrophysics

Astronomy

8

Abundance, Hydrogen, Jupiter (Planet), Jupiter Atmosphere, Molecular Ions, Planetary Ionospheres, Planetary Magnetospheres, Power Spectra, Spaceborne Astronomy, Astronomical Spectroscopy, Atmospheric Composition, Energetic Particles, Helium Isotopes, Space Plasmas, Ulysses Mission

Scientific paper

The Voyager 2 measurements of energetic (approximately 1 MeV/nucleon) H3 molecules in Jupiter's magnetosphere provided strong evidence that the planet's ionosphere is an important plasma source in the Jovian environment (Hamilton et al., 1980). During the Ulysses spacecraft encounter with Jupiter in February 1992 the Heliosphere Instrument for Spectra, Composition, and Anisotropy at Low Energies (HI-SCALE) on this satellite also detected significant fluxes of energetic H3 molecules. These molecules were measured throughout the dayside inbound pass (near the plasma sheet) as well as during the outbound pass at high Jovian latitudes on the duskside. The spectral shapes of the energetic He-4 and the H3 are found to be similar over the range approximately 0.6 - 1.6 MeV/nucleon, with a power law spectral slope of n approximately 3. The abundance ratio R (H3/He-4) is found to be approximately 0.1 over this energy range for the inbound pass and to vary from approximately 0.2 at approximately 0.6 MeV/nucleon to approximately 0.1 at approximately 1.6 MeV/nucleon at dusk side high latitudes. These observations, especially those from high latitudes, confirm that the energetic molecules must be accelerated out of the Jovian topside ionosphere into the magnetosphere.

Affiliated with

Also associated with

No associations

Rating

ULYSSES measurements of energetic H3 molecules in Jupiter's magnetosphere 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 ULYSSES measurements of energetic H3 molecules in Jupiter's magnetosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ULYSSES measurements of energetic H3 molecules in Jupiter's magnetosphere will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1300123