Periodic features in Saturn's F ring: evidence for nearby moonlets

Kolvoord, Robert A; Burns, Joseph A.; Showalter, M. R.

doi:10.1038/345695a0

Cited by 44 publications

(22 citation statements)

References 13 publications

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“…Furthermore, the observed changing tilt of the drapes with longitude around the ring, and asymmetry in the tilt on either side of the gap, suggest that the striations are the result of the Keplerian shear of perturbed material that was approximately radial at the time of successive apoapse passages of Prometheus, consistent with the physical model for gap formation (60, 61) discussed above. (2), and with the exception of the signature of Prometheus, no signatures at the wavelengths found by previous investigators (63).…”

Section: S P E C I a L S E C T I O Nmentioning

confidence: 64%

Cassini Imaging Science: Initial Results on Saturn's Rings and Small Satellites

Porco

Baker

Barbara

et al. 2005

Science

186

128

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Images acquired of Saturn's rings and small moons by the Cassini Imaging Science Subsystem (ISS) during the first 9 months of Cassini operations at Saturn have produced many new findings. These include new saturnian moons; refined orbits of new and previously known moons; narrow diffuse rings in the F-ring region and embedded in gaps within the main rings; exceptionally fine-scale ring structure in moderateâ to highâoptical depth regions; new estimates for the masses of ring-region moons, as well as ring particle properties in the Cassini division, derived from the analysis of linear density waves; ring particle albedos in select ring regions; and never-before-seen phenomena within the rings.

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Section: S P E C I a L S E C T I O Nmentioning

confidence: 64%

Cassini Imaging Science: Initial Results on Saturn's Rings and Small Satellites

Porco

Baker

Barbara

et al. 2005

Science

186

128

View full text Add to dashboard Cite

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“…Evidence for longitudinal brightness variations exists in images from Voyager ( Fig. 1 in Kolvoord et al 1990) and from Earth-based ring-plane crossings (Fig. 7 in Nicholson et al 1996;Fig.…”

Section: Particle Sizesmentioning

confidence: 93%

Saturn's F Ring: Kinematics and Particle Sizes from Stellar Occultation Studies

Bosh

Olkin

French

et al. 2002

Icarus

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“…We considered this scenario for two reasons: (i) Satellite-ringlet interactions are known to play a major role in the dynamical evolution of ringlets (7,8,14), and (ii) a satellite on an eccentric orbit can interact periodically with a nearby ringlet, constantly generating new structures longitudinally spaced by 3pDa/a [where a and a þ Da are the semimajor axes of the F-ring core and of the satellite, respectively (15)]. In addition to Prometheus and Pandora, the F ring has long been suspected to shelter a population of small unseen moons (16,17).…”

mentioning

confidence: 99%

Cassini Discovers a Kinematic Spiral Ring Around Saturn

Charnoz

Porco

Déau

et al. 2005

Science

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Since the time of the Voyager flybys of Saturn in 1980–1981, Saturn's eccentric F ring has been known to be accompanied on either side by faint strands of material. New Cassini observations show that these strands, initially interpreted as concentric ring segments, are in fact connected and form a single one-arm trailing spiral winding at least three times around Saturn. The spiral rotates around Saturn with the orbital motion of its constituent particles. This structure is likely the result of differential orbital motion stretching an initial cloud of particles scattered from the dense core of the F ring. Different scenarios of formation, implying ringlet-satellite interactions, are explored. A recently discovered moon candidate, S/2004 S6, is on an orbit that crosses the F-ring core at the intersection of the spiral with the ring, which suggests a dynamical connection between S/2004 S6 and the spiral.

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Periodic features in Saturn's F ring: evidence for nearby moonlets

Cited by 44 publications

References 13 publications

Cassini Imaging Science: Initial Results on Saturn's Rings and Small Satellites

Cassini Imaging Science: Initial Results on Saturn's Rings and Small Satellites

Saturn's F Ring: Kinematics and Particle Sizes from Stellar Occultation Studies

Cassini Discovers a Kinematic Spiral Ring Around Saturn

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