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

  title={Small particles dominate Saturn’s Phoebe ring to surprisingly large distances},
  author={Douglas P. Hamilton and Michael F. Skrutskie and Anne J. Verbiscer and Frank J. Masci},
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 (RS = 60,330 kilometres) from the planet, with a full vertical extent of 40RS, making it well over ten times larger than Saturn’s hitherto largest known ring, the E ring. The total radial extent of the Phoebe ring could not, however, be determined at that time, nor could particle sizes be… Expand
Radial profiles of the Phoebe ring: A vast debris disk around Saturn
Abstract We present observations at optical wavelengths with the Cassini Spacecraft’s Imaging Science System of the Phoebe ring, a vast debris disk around Saturn that seems to be collisionallyExpand
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Using CFHT imaging data, we searched a 1.1 deg2 field on each side of Saturn down to magnitude m w ≃ 26.3, corresponding to diameters of D ≃ 3 km. We detected 120 objects, which were comoving withExpand
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Direct imaging surveys have found that long-period super-Jupiters are rare. By contrast, recent modeling of the widespread gaps in protoplanetary disks revealed by ALMA suggests an abundantExpand
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The outer or irregular moons of Saturn are a class of objects that is very distinct from the other satellites treated in this book. It not only has more objects (38 are presently known) than theExpand
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Abstract The large and tidally-locked “classical” moons of Uranus display longitudinal and planetocentric trends in their surface compositions. Spectrally red material has been detected primarily onExpand
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Abstract The Cassini Radio and Plasma Wave Science (RPWS) instrument can detect dust particles when voltage pulses induced by the dust impacts are observed in the wideband receiver. The size of theExpand
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Saturn's icy satellites investigated by Cassini-VIMS. IV. Daytime temperature maps
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Cassini RPWS Dust Observation Near the Janus/Epimetheus Orbit
  • S.-Y. Ye, W. Kurth, +7 authors R. Srama
  • Physics
  • Journal of Geophysical Research: Space Physics
  • 2018
During the Ring Grazing orbits near the end of Cassini mission, the spacecraft crossed the equatorial plane near the orbit of Janus/Epimetheus (~2.5 Rs). This region is populated with dust particlesExpand


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The three-dimensional structure of Saturn’s E ring
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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