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… 

An Evolving View of Saturn’s Dynamic Rings

TLDR
The understanding of Saturn’s rings is reviewed after nearly 6 years of observations by the Cassini spacecraft and it remains unclear whether the vigorous evolutionary processes to which the rings are subject imply a much younger age than that of the solar system.

Small particles dominate Saturn’s Phoebe ring to surprisingly large distances

Saturn’s faint outermost ring, discovered in 2009 (ref. 1), is probably formed by particles ejected from the distant moon Phoebe. The ring was detected between distances of 128 and 207 Saturn radii

Planetary Rings

Planetary rings are the only nearby astrophysical disks, and the only disks that have been investigated by spacecraft (especially the Cassini spacecraft orbiting Saturn). Although there are

Cassini-Huygens’ exploration of the Saturn system: 13 years of discovery

TLDR
The Cassini-Huygens mission to Saturn provided a close-up study of the gas giant planet, as well as its rings, moons, and magnetosphere, and results show that Saturn's rings are substantially younger than the planet itself and constrain models of their origin.

Satellite and Ring Systems

After having studied the Earth’s Moon in Chap. 8, we now look at the moons of the other planets of the solar system. A quick look at the two moons of Mars is followed by a detailed examination of the

Searching for Saturn's Dust Swarm: Limits on the size distribution of Irregular Satellites from km to micron sizes

We describe a search for dust created in collisions between the Saturnian irregular satellites using archival Spitzer MIPS observations. Although we detected a degree scale Saturn-centric excess that

Dust and Snow Cover on Saturn's Icy Moons

The final analysis of the Cassini radar observations of Saturn's icy moons presented here shows that the exchange of material between the planet's dust rings and moons, which is specific to the

Direct imaging of irregular satellite discs in scattered light

Direct imaging surveys have found that long-period super-Jupiters are rare. By contrast, recent modelling of the widespread gaps in protoplanetary discs revealed by Atacama Large Millimetre Array
...

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. These

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.

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.

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.

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 extend

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 and

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 dark

The dark side of Iapetus