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The magnetic field of NeptuneA model is given of the planetary magnetic field of Neptune based on a spherical harmonic analysis of the observations obtained by the Voyager 2. Generalized inverse techniques are used to partially solve a severely underdetermined inverse problem, and the resulting model is nonunique since the observations are limited in spatial distribution. Dipole, quadrupole, and octupole coefficients are estimated independently of other terms, and the parameters are shown to be well constrained by the measurement data. The large-scale features of the magnetic field including dipole tilt, offset, and harmonic content are found to characterize a magnetic field that is similar to that of Uranus. The traits of Neptune's magnetic field are theorized to relate to the 'ice' interior of the planet, and the dynamo-field generation reflects this poorly conducting planet.
Document ID
19920069347
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Connerney, J. E. P.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Acuna, Mario H.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ness, Norman F.
(Bartol Research Institute Newark, DE, United States)
Date Acquired
August 15, 2013
Publication Date
August 1, 1992
Publication Information
Publication: Advances in Space Research
Volume: 12
Issue: 8, Au
ISSN: 0273-1177
Subject Category
Lunar And Planetary Exploration
Accession Number
92A51971
Distribution Limits
Public
Copyright
Other

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