Close-range remote sensing of Saturn’s rings during Cassini’s ring-grazing orbits and Grand Finale - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Science Year : 2019

Close-range remote sensing of Saturn’s rings during Cassini’s ring-grazing orbits and Grand Finale

Philip Nicholson
Linda Spilker
Carl Murray
Matthew Hedman
Joshua Colwell
Shawn Brooks
Roger Clark
Nicholas Cooper
Cécile Ferrari
Sarah Badman
Emily Baker
Bonnie Buratti
Kevin Baines
Christophe Sotin

Abstract

Saturn's rings are an accessible exemplar of an astrophysical disk, tracing the Saturn system's dynamical processes and history. We present close-range remote-sensing observations of the main rings from the Cassini spacecraft. We find detailed sculpting of the rings by embedded masses, and banded texture belts throughout the rings. Saturn-orbiting streams of material impact the F ring. There are fine-scaled correlations among optical depth, spectral properties, and temperature in the B ring, but anticorrelations within strong density waves in the A ring. There is no spectral distinction between plateaux and the rest of the C ring, whereas the region outward of the Keeler gap is spectrally distinct from nearby regions. These results likely indicate that radial stratification of particle physical properties, rather than compositional differences, is responsible for producing these ring structures
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Dates and versions

insu-02615445 , version 1 (06-08-2020)

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Matthew Tiscareno, Philip Nicholson, Jeffrey N Cuzzi, Linda Spilker, Carl Murray, et al.. Close-range remote sensing of Saturn’s rings during Cassini’s ring-grazing orbits and Grand Finale. Science, 2019, 364 (6445), pp.eaau1017. ⟨10.1126/science.aau1017⟩. ⟨insu-02615445⟩
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