Saturn's largest ring

@article{Verbiscer2009SaturnsLR,
  title={Saturn's largest ring},
  author={Anne J. Verbiscer and Michael F. Skrutskie and Douglas P. Hamilton},
  journal={Nature},
  year={2009},
  volume={461},
  pages={1098-1100}
}
Most planetary rings in the Solar System lie within a few radii of their host body, because at these distances gravitational accelerations inhibit satellite formation. The best known exceptions are Jupiter’s gossamer rings and Saturn’s E ring, broad sheets of dust that extend outward until they fade from view at five to ten planetary radii. Source satellites continuously supply the dust, which is subsequently lost in collisions or by radial transport. Here we report that Saturn has an enormous… Expand
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References

SHOWING 1-10 OF 17 REFERENCES
The Asymmetric Time-Variable Rings of Mars
Abstract In this paper, we investigate the dynamics and steady-state behavior of the hypothetical circumplanetary dust rings associated with the two tiny satellites of Mars, Phobos and Deimos. TheseExpand
The sculpting of Jupiter’s gossamer rings by its shadow
TLDR
Detailed modelling is presented that shows that the passage of ring particles through Jupiter’s shadow creates the Thebe extension and fully accounts for these Galileo results on dust impacts detected during the Galileo spacecraft's traversal of the outer ring region. Expand
The formation of Jupiter's faint rings
TLDR
Observations by the Galileo spacecraft and the Keck telescope showed that Jupiter's outermost (gossamer) ring is actually two rings circumscribed by the orbits of the small satellites Amalthea and Thebe, suggesting that faint rings may accompany all small inner satellites of the other jovian planets. Expand
Compositional maps of Saturn's moon Phoebe from imaging spectroscopy
TLDR
Imaging spectroscopy of Phoebe resulting from the Cassini–Huygens spacecraft encounter on 11 June 2004 mapped ferrous-iron-bearing minerals, bound water, trapped CO2, probable phyllosilicates, organics, nitriles and cyanide compounds, indicating a surface of cometary origin. Expand
Motion of dust in a planetary magnetosphere - Orbit-averaged equations for oblateness, electromagnetic, and radiation forces with application to Saturn's E ring
Abstract In this paper, we apply orbital perturbation theory to the circumplanetary motion of micrometer-sized dust grains subject to gravitational, electromagnetic, and radiation forces. We extendExpand
Orbital and Collisional Evolution of the Irregular Satellites
The irregular moons of the Jovian planets are a puzzling part of the solar system inventory. Unlike regular satellites, the irregular moons revolve around planets at large distances in tilted andExpand
Hydrocarbons on Saturn's satellites Iapetus and Phoebe
Material of low geometric albedo (pV⩽0.1pV⩽0.1) is found on many objects in the outer Solar System, but its distribution in the saturnian satellite system is of special interest because of itsExpand
The Contamination of Iapetus by Phoebe Dust
We examine whether the dark, orbitally-leading hemisphere of Saturn's satellite Iapetus might be coated by debris from low-albedo Phoebe, which orbits retrograde well exterior to Iapetus. UsingExpand
The Dark Side of Iapetus: Additional Evidence for an Exogenous Origin
The saturnian satellite Iapetus presents one of the most unusual appearances of any object in the Solar System: one hemisphere is about 10 times as bright as the other. The origin of the darkExpand
Spectrophotometry of the small satellites of Saturn and their relationship to Iapetus, Phoebe, and Hyperion
Abstract We have obtained broadband spectrophotometric observations of four of the recently discovered small satellites of Saturn (Gladman et al., 2001, Nature 412, 163–166). The new data enable anExpand
...
1
2
...