Physics
Scientific paper
Sep 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979soph...63..411m&link_type=abstract
Solar Physics, vol. 63, Sept. 1979, p. 411-421.
Physics
6
Helios Satellites, Interplanetary Magnetic Fields, Satellite Observation, Amplitudes, Magnetic Variations, Radial Distribution
Scientific paper
Helios 1 and 2 spacecraft allowed a detailed investigation of the radial dependence of the interplanetary magnetic field components between 0.3 and 1 AU. The behavior of the radial component is in a very good agreement with Parker's model (approximately equal to the inverse square of the heliocentric distance) and the azimuthal component also shows a radial dependence which is close to theoretical predictions (approximately equal to the inverse of the heliocentric distance). Experimental results for the normal component and for the field magnitude are consistent with those from previous investigations. The relative amplitude of the directional fluctuations with periods less than 12 hr is essentially independent of heliocentric distance, while their power decreases approximately as the inverse cube of the heliocentric distance without any appreciable difference between higher and lower velocity regimes.
Bavassano Bruno
Bruno Roberto
Mariani Franco
Ness Norman F.
Villante Umberto
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