The shape and location of the sector boundary surface in the inner solar system

Details The shape and location of the sector boundary surface in the inner solar system The shape and location of the sector boundary surface in the inner solar system

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.6641v&link_type=abstract

Journal of Geophysical Research, vol. 84, Nov. 1, 1979, p. 6641-6648.

Astronomy and Astrophysics

Astrophysics

11

Helios 1, Helios 2, Interplanetary Magnetic Fields, Magnetic Field Configurations, Solar System, Astrophysics, Current Sheets, Graphs (Charts), High Resolution, Latitude, Polarity, Satellite Observation, Solar Rotation

Scientific paper

Simultaneous observations by Helios 1 and Helios 2 over four solar rotations, between January 20 and May 23, 1976, were used to determine the latitudinal dependence of the polarity of the interplanetary magnetic field within plus or minus 7.23 deg of the solar equator and within 1 AU. The longitudinal and latitudinal positions of the sector boundary crossing are consistent with a warped sector boundary which extended from the sun to 1 AU and was inclined approximately 10 deg with respect to the heliographic equator. This is consistent with simultaneous Pioneer 11 observations, which showed unipolar fields at approximately 16 deg latitude at heliocentric distances greater than 3.5 AU. Two sectors were observed at southern latitudes; however, four sectors were observed at northern latitudes on two rotations, indicating a distortion from planarity of the sector boundary surface.

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