Saturn’s Gravitational Field, Internal Rotation, and Interior Structure

Details Saturn’s Gravitational Field, Internal Rotation, and Interior Structure Saturn’s Gravitational Field, Internal Rotation, and Interior Structure

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sci...317.1384a&link_type=abstract

Science, Volume 317, Issue 5843, pp. 1384- (2007).

Physics

37

Scientific paper

Saturn’s internal rotation period is unknown, though it must be less than 10 hours, 39 minutes, and 22 seconds, as derived from magnetic field plus kilometric radiation data. By using the Cassini spacecraft’s gravitational data, along with Pioneer and Voyager radio occultation and wind data, we obtain a rotation period of 10 hours, 32 minutes, and 35 ± 13 seconds. This more rapid spin implies slower equatorial wind speeds on Saturn than previously assumed, and the winds at higher latitudes flow both east and west, as on Jupiter. Our related Saturn interior model has a molecular-to-metallic hydrogen transition about halfway to the planet’s center.

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