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Dix Planetary Science Seminar

Tuesday, November 6, 2018
4:00pm to 5:00pm
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South Mudd 365
Saturn's Interior Rotation from Cassini Ring Seismology
Chris Mankovich, PhD Candidate, Astronomy & Astrophysics Department, UC Santa Cruz,

Cassini observations of Saturn's ring system have revealed waves excited at resonances with Saturn's internal oscillations. The ongoing characterization of these waves is filling out a stunningly precise power spectrum for Saturn's oscillations, ushering in the era of full-fledged giant planet seismology. The earliest detected waves have already led to striking results about Saturn's deep interior, and the many subsequent wave detections have led to a rather complete dataset that strongly constrains the planet's interior rotation. I will present recent work interpreting these waves in terms of Saturn's fundamental mode oscillations, including the seismological determination of a notoriously elusive quantity: Saturn's spin period.