Equatorial disc and dawn-dusk currents in the frontside magnetosphere of Jupiter - Pioneer 10 and 11

Details Equatorial disc and dawn-dusk currents in the frontside magnetosphere of Jupiter - Pioneer 10 and 11 Equatorial disc and dawn-dusk currents in the frontside magnetosphere of Jupiter - Pioneer 10 and 11

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.1601j&link_type=abstract

Journal of Geophysical Research, vol. 86, Mar. 1, 1981, p. 1601-1605.

Physics

8

Atmospheric Electricity, Equatorial Atmosphere, Jupiter Atmosphere, Pioneer 10 Space Probe, Pioneer 11 Space Probe, Planetary Magnetospheres, Azimuth, Current Sheets, Daytime, Time Dependence, Jupiter, Magnetosphere, Currents, Pioneer 11, Pioneer 10, Azimuth, Observations, Models, Data, Perturbations, Comparisons, Characteristics

Scientific paper

Observations by Pioneer 10 and 11 show that the strongest azimuthal fields are observed near the dawn meridian (Pioneer 10) while the weakest occur near the noon meridian (Pioneer 11), suggesting a strong local time dependence for the corresponding radial current system. Modeling studies of the radial component of the field observed by both spacecraft suggest that the corresponding azimuthal current system must also be a strong function of local time. Both the azimuthal and the radial field component signatures exhibit sharp dips and reversals, requiring thin radial and azimuthal current systems. There is also a suggestion that these two current systems either are interacting or are due, at least in part, to the same current. It is suggested that a plausible current model consists of the superposition of a thin, local-time-independent azimuthal current system plus the equatorial portion of a tail-like current system that extends into the dayside magnetosphere.

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