The Parker spiral configuration of the interplanetary magnetic field between 1 and 8.5 AU

Details The Parker spiral configuration of the interplanetary magnetic field between 1 and 8.5 AU The Parker spiral configuration of the interplanetary magnetic field between 1 and 8.5 AU

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.6861t&link_type=abstract

Journal of Geophysical Research, vol. 85, Dec. 1, 1980, p. 6861-6867. Research supported by the National Research Council;

Astronomy and Astrophysics

Astronomy

18

Interplanetary Magnetic Fields, Magnetic Field Configurations, Spaceborne Astronomy, Pioneer 10 Space Probe, Pioneer 11 Space Probe, Spirals

Scientific paper

The magnetic field data from the Pioneer 10 and 11 spacecraft show that the field directions between 1 and 8.5 AU are in accordance with the Parker spiral directions within quiet and interaction regions. The included angle between the inward and outward sectored field directions is near 180 deg; the field direction manifests greater variability in quiet regions than in interaction zones. The fractional polarities below 10 deg heliographic latitude are dominated by temporal variations; however, dual-spacecraft investigations permitted a significant latitudinal gradient to be extracted. The sector structure extended occasionally to 16 deg heliographic latitude during the period of average current sheet inclination in 1976; it is proposed that the fast streams associated with interaction regions may move the current sheet to higher latitudes when the source of the fast plasma is in the southern solar hemisphere.

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