Voyager 2 - Energetic ions and electrons in the Jovian magnetosphere

Details Voyager 2 - Energetic ions and electrons in the Jovian magnetosphere Voyager 2 - Energetic ions and electrons in the Jovian magnetosphere

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979sci...206..984v&link_type=abstract

Science, vol. 206, Nov. 23, 1979, p. 984-987.

Computer Science

5

Jupiter Atmosphere, Magnetospheric Electron Density, Magnetospheric Ion Density, Planetary Magnetospheres, Voyager 2 Spacecraft, Anisotropy, Chemical Composition, Cosmic Rays, Particle Accelerators, Particle Flux Density, Spatial Distribution, Variability

Scientific paper

The passage of Voyager 2 through the Jovian magnetosphere demonstrated that this magnetosphere is highly variable, even as close as 10 Jupiter radii from the planet. The cosmic-ray subsystem measured the flux, elemental composition, and anisotropy of energetic particles. Its high sensitivity was particularly valuable during the long passage through the magnetotail, where particle fluxes were orders of magnitude less than in the inner magnetosphere and approached interplanetary values. The new data confirm earlier observations that the Jovian magnetosphere is a giant accelerator of particles - electrons, protons, and heavy ions, including sulfur. Both spatial and temporal changes are observed in the magnetosphere as compared to prior observations with Pioneer 10 and 11 and Voyager 1. It is suggested that the 10-hr modulation of interplanetary Jovian electrons may be associated with the arrival at the dawn magnetopause of a rarefaction region each planetary rotation.

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