Computer Science
Scientific paper
Oct 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975lein.conf..299a&link_type=abstract
VII Leningrad international seminar, p. 299 - 325
Computer Science
Data, Jupiter (Planet), Magnetic Flux, Magnetometers, Pioneer 11 Space Probe, Distortion, Magnetic Moments, Quadrupoles, Radiation Belts, Spherical Harmonics
Scientific paper
The main magnetic field of Jupiter was measured by the Fluxgate Magnetometer on Pioneer 11 and analysis reveals it to be relatively more complex than expected. In a centered spherical harmonic representation with a maximum order of n = 3 (designated GSFC model 04), the dipole term (with opposite polarity to the Earth's) has a moment of 4.28 Gauss x (Jupiter radius cubed), tilted by 9.6 deg towards a system 111 longitude of 232. The quadrupole and octupole moments are significant, 24% and 21% of the dipole moment respectively, and this leads to deviations of the planetary magnetic field from a simple offset tilted dipole for distances smaller than three Jupiter radii. The GSFC model shows a north polar field strength of 14 Gauss and a south polar field strength of 10.4 Gauss. Enhanced absorption effects in the radiation belts may be predicted as a result of field distortion.
Acuña Mario Humberto
Ness Norman F.
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