An analysis of the structure of Saturn's magnetic field using charged particle absorption signatures

Details An analysis of the structure of Saturn's magnetic field using charged particle absorption signatures An analysis of the structure of Saturn's magnetic field using charged particle absorption signatures

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.5267c&link_type=abstract

Journal of Geophysical Research, vol. 87, July 1, 1982, p. 5267-5274. Research sponsored by the Aerospace Corp

Astronomy and Astrophysics

Astronomy

19

Charged Particles, Magnetic Field Configurations, Planetary Magnetic Fields, Saturn (Planet), Saturn Rings, Astronomical Models, Least Squares Method, Magnetometers, Planetary Rotation, Spacecraft Trajectories, Spherical Harmonics, Saturn, Magnetic Fields, Analysis, Structure, Charged Particles, Data, Absorption, Techniques, Satellites, Rings, Parameters, Pioneer 11, Spherical Harmonics, Models, Voyager 1, Voyager 2, Dipole, Magnitude, Comparisons, Magnetometer, Latitude, Longitude, Procedure, Protons

Scientific paper

A new technique is derived for determining the structure of Saturn's magnetic field. This technique uses the observed positions of charged particle signatures due to the satellites and rings of Saturn to determine the parameters of an axially symmetric, spherical harmonic model of the magnetic field using the method of least squares. Absorption signatures observed along the Pioneer 11, Voyager 1, and Voyager 2 spacecraft trajectories are used to derive values for the orientation of the magnetic symmetry axis relative to Saturn's axis of rotation, the axial displacement of the center of the magnetic dipole from the center of Saturn, and the magnitude of the external field component. Comparing these results with the magnetic field model parameters deduced from analyses of magnetometer data leads to a preference for models that incorporate a northward offset of the dipole center by about 0.05 Saturn radii.

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