Structure and properties of Jupiter's magnetoplasmadisc

Details Structure and properties of Jupiter's magnetoplasmadisc Structure and properties of Jupiter's magnetoplasmadisc

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979georl...6..785b&link_type=abstract

Geophysical Research Letters, vol. 6, Oct. 1979, p. 785-788.

Physics

6

Jupiter Atmosphere, Planetary Magnetospheres, Plasma Diagnostics, Voyager Project, Energetic Particles, Magnetospheric Electron Density, Plasma Layers, Plasma Pressure, Solar Protons, Jupiter, Plasmas, Structure, Properties, Magnetosphere, Voyager Plasma Wave System, Electromagnetic Radiation, Kinematics, Magnetic Fields, Pressure, Density, Protons, Temperatures, Plasma Sheet, Radial Profiles, Magnetometer, Observations, Electrons, Thickness, Ions, Concentrations

Scientific paper

Voyager 1 plasma-wave observations have revealed the existence of an earthlike continuum radiation trapped in Jupiter's magnetospheric cavity at frequencies below the solar-wind plasma frequency. This radiation serves as an accurate diagnostic of the local electron number density throughout most of Jupiter's outer magnetosphere and yields information regarding the gross configuration of the magnetoplasmadisk as well as its kinematical properties. Magnetic-field observations are used to construct radial profiles of plasma pressure, density, and temperature from 20-80 Jupiter radii in the early-morning plasma sheet, along with plasma-sheet crossings and estimated thicknesses. The study suggests that hot protons (about 10 keV) are the dominant constituents of the plasma sheet (average thickness about 4.2 Jupiter radii) out to 80 Jupiter radii, beyond which centrifugal effects take over and distort the sheet toward the rotational equator.

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