Physics – Space Physics
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ncimc...5..497v&link_type=abstract
Nuovo Cimento C, Geophysics and Space Physics, vol. 5C, Sept.-Oct. 1982, p. 497-506.
Physics
Space Physics
Helios Satellites, Interplanetary Magnetic Fields, Magnetic Field Configurations, Angular Distribution, Magnetic Flux, Radial Distribution, Solar Cycles, Solar Rotation, Solar System
Scientific paper
A long-term analysis (1975-1981) of the interplanetary magnetic field (IMF) observations performed by Helios 1 and Helios 2 in the inner solar system is presented. After correcting for the spacecraft radial excursion, the average value over a solar rotation of the radial component is observed to range approximately between 13 and 21 nT at 0.4 AU, and some evidence for a 15 percent modulation can be observed in the rising part of the new solar cycle. In the inner solar system the IMF orientation closely corresponds to the model predictions. The histograms of the angular elements are possibly more peaked than those obtained at greater heliocentric distances. This may suggest that the stream interactions tend progressively to deflect the field lines from the expected orientations.
Cirone R.
Mariani Franco
Villante Umberto
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