The Dust Halo of Saturn's Largest Icy Moon, Rhea

  title={The Dust Halo of Saturn's Largest Icy Moon, Rhea},
  author={G. H. Jones and Elias Roussos and Norbert Krupp and Uwe Beckmann and Andrew J. Coates and F. Crary and Iannis Dandouras and Valery V. Dikarev and Michele K. Dougherty and P. Garnier and Carl J. Hansen and Amanda R. Hendrix and George Blair Hospodarsky and Robert E. Johnson and Sascha Kempf and Krishan K. Khurana and Stamatios M. Krimigis and Harald Kr{\"u}ger and William S. Kurth and Andreas Lagg and H. J. McAndrews and Donald G. Mitchell and C. P. Paranicas and Frank Postberg and Christopher T. Russell and Joachim Saur and M. Sei{\ss} and Frank Spahn and Ralf Srama and Darrell F. Strobel and Robert L. Tokar and J. E. Wahlund and R. J. Wilson and Joachim Woch and David T. Young},
  pages={1380 - 1384}
Saturn's moon Rhea had been considered massive enough to retain a thin, externally generated atmosphere capable of locally affecting Saturn's magnetosphere. The Cassini spacecraft's in situ observations reveal that energetic electrons are depleted in the moon's vicinity. The absence of a substantial exosphere implies that Rhea's magnetospheric interaction region, rather than being exclusively induced by sputtered gas and its products, likely contains solid material that can absorb… 

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