Voyager measurement of the rotation period of Saturn's magnetic field

Details Voyager measurement of the rotation period of Saturn's magnetic field Voyager measurement of the rotation period of Saturn's magnetic field

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981georl...8..253d&link_type=abstract

Geophysical Research Letters, vol. 8, Mar. 1981, p. 253-256.

Astronomy and Astrophysics

Astronomy

161

Magnetic Variations, Planetary Magnetic Fields, Planetary Rotation, Radio Astronomy, Saturn (Planet), Voyager Project, Jupiter (Planet), Kilometric Waves, Least Squares Method, Planetary Radiation, Power Spectra, Spectral Resolution, Saturn, Magnetic Fields, Rotation, Voyager 1, Data, Longitude, Ephemeris, Mathematical Models, Pra, Spectrum, Radio Emissions, Observations, Procedure, Planetary Radio Astronomy Experiments

Scientific paper

Saturn's radio rotation period is determined using measurements made by the Planetary Radio Astronomy experiment onboard the Voyager spacecraft. The sidereal period deduced is 10 hr 39 min 24 sec + or 7 sec. The radio rotation period is presumably that of the planet's magnetic field. A provisional Saturn longitude convention is proposed, and equations are provided to compute a longitude emphemeris and to transform between the proposed system and the (10 hr 14 min) system used for the Pioneer 11/Saturn encounter. In addition, the degree of longitude smearing which could result over the long term from the merging of data sets organized in this system is evaluated. Finally, no evidence of control of the radio emission by any of Saturn's satellites is found.

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