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Related papers: The three-dimensional structure of Saturn's E ring

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Saturn's B ring is the most opaque ring in our solar system, but many of its fundamental parameters, including its total mass, are not well constrained. Spiral density waves generated by mean-motion resonances with Saturn's moons provide…

Earth and Planetary Astrophysics · Physics 2016-08-31 M. M. Hedman , P. D. Nicholson

The best constraints on the internal structures of giant planets have historically come from measurements of their gravity fields. These gravity data are inherently mostly sensitive to a planet's outer regions, providing only loose…

Earth and Planetary Astrophysics · Physics 2021-05-05 Christopher Mankovich , Jim Fuller

The recent discovery of dense rings around the Centaur Chariklo (and possibly Chiron) reveals that complete dense planetary rings are not only found around Saturn and Uranus, but also around small bodies orbiting in the vicinity of those…

Earth and Planetary Astrophysics · Physics 2015-06-24 M. M. Hedman

Images obtained by the Cassini spacecraft between 2012 and 2015 reveal a periodic brightness variation in a region of Saturn's D ring that previously appeared to be rather featureless. Furthermore, the intensity and radial wavenumber of…

Earth and Planetary Astrophysics · Physics 2016-08-31 M. M. Hedman , M. R. Showalter

Saturn's ionosphere is produced when the otherwise neutral atmosphere is exposed to a flow of energetic charged particles or solar radiation. At low latitudes the latter should result in a weak planet-wide glow in infrared (IR),…

Earth and Planetary Astrophysics · Physics 2013-10-29 J. O'Donoghue , T. S. Stallard , H. Melin , G. H. Jones , S. W. H. Cowley , S. Miller , K. H. Baines , J. S. D. Blake

Certain spiral density waves in Saturn's rings are generated through resonances with planetary normal modes, making them valuable probes of Saturn's internal structure. Previous research has primarily focused on the rotation rates of these…

Saturn's F ring is subject to dynamic structural changes over short periods. Among the observed phenomena are diffuse extended bright clumps (ECs) ~ 3-40 degrees in longitudinal extent. These ECs appear, evolve, and disappear over a span of…

Earth and Planetary Astrophysics · Physics 2014-08-13 Robert S. French , Shannon K. Hicks , Mark R. Showalter , Adrienne K. Antonsen , Douglas R. Packard

The dynamics of Saturn's F Ring have been a matter of curiosity ever since Voyagers 1 and 2 sent back pictures of the ring's unusual features. Some of these images showed three distinct ringlets with the outer two displaying a kinked and…

Space Physics · Physics 2007-05-23 L. S. Matthews , T. W. Hyde

We suggest that the irregular structure in Saturn's B ring arises from the formation of shear-free ring-particle assemblies of up to ~100 km in radial extent. The characteristic scale of the irregular structure is set by the competition…

Astrophysics · Physics 2009-11-07 Scott Tremaine

Tidal interactions between Saturn and its satellites play a crucial role in both the orbital migration of the satellites and the heating of their interiors. Therefore constraining the tidal dissipation of Saturn (here the ratio k2/Q) opens…

Earth and Planetary Astrophysics · Physics 2015-06-04 V. Lainey , Ö. Karatekin , J. Desmars , S. Charnoz , J-E. Arlot , N. Emelyanov , C. Le Poncin-Lafitte , S. Mathis , F. Remus , G. Tobie , J-P. Zahn

The building blocks of Titan and Enceladus are believed to have formed in a late-stage circumplanetary disk around Saturn. Evaluating the evolution of the abundances of volatile species in this disk as a function of the migration, growth,…

Earth and Planetary Astrophysics · Physics 2021-02-08 Sarah Anderson , Olivier Mousis , Thomas Ronnet

The appearance of debris disks around distant stars depends upon the scattering/phase function (SPF) of the material in the disk. However, characterizing the SPFs of these extrasolar debris disks is challenging because only a limited range…

Earth and Planetary Astrophysics · Physics 2015-09-24 M. M. Hedman , C. C. Stark

We present a review of Saturn's interior structure and thermal evolution, with a particular focus on work in the past 5 years. Data from the Cassini mission, including a precise determination of the gravity field from the Grand Finale…

Saturn's rings, reminiscent of an early Solar System present a unique opportunity to investigate experimentally some mechanisms thought to be responsible for planet and planetesimal formation in protoplanetary discs. Here we extended the…

Earth and Planetary Astrophysics · Physics 2015-06-18 Phil J Sutton , Feo Kusmartsev

We describe a powerful signal processing method, the continuous wavelet transform, and use it to analyze radial structure in Cassini ISS images of Saturn's rings. Wavelet analysis locally separates signal components in frequency space,…

Stellar occultations by Saturn's rings observed with the Visual and Infrared Mapping Spectrometer (VIMS) onboard the Cassini spacecraft reveal that dusty features such as the F ring and the ringlets in the Encke and the Laplace Gaps have…

Earth and Planetary Astrophysics · Physics 2011-09-23 M. M. Hedman , P. D Nicholson , M. R. Showalter , R. H. Brown , B. J. Buratti , R. N. Clark , K. Baines , C. Sotin

Voyager images and Cassini occultation data have previously shown that the behavior of the outer edge of Saturn's massive B ring is determined only in part by a static response to the 2:1 inner Lindblad resonance with Mimas. In Cassini…

Earth and Planetary Astrophysics · Physics 2010-11-11 Joseph N. Spitale , Carolyn C. Porco

Saturns rings are known to show remarkable real time variability in their structure. Many of which can be associated to interactions with nearby moons and moonlets. Possibly the most interesting and dynamic place in the rings, probably in…

Earth and Planetary Astrophysics · Physics 2016-09-12 Phil J Sutton , Feo Kusmartsev

A goal of Cassini's extended mission has been to examine the seasonal variations of Saturn's magnetosphere, moons, and rings. Recently we showed that the magnetospheric plasma between the main rings and Enceladus exhibited a time dependence…

Earth and Planetary Astrophysics · Physics 2015-06-18 Meredith K. Elrod , Wei-Ling Tseng , Adam K. Woodson , Robert E. Johnson

We use a simple model of the dynamics of a narrow-eccentric ring, to put some constraints on some of the observable properties of the real systems.In this work we concentrate on the case of the `Titan ringlet of Saturn'.Our approach is…

Astrophysics · Physics 2009-11-10 M. D. Melita , J. C. B. Papaloizou