The Source of Saturn's G Ring

  title={The Source of Saturn's G Ring},
  author={Matthew M. Hedman and Joseph A. Burns and Matthew S. Tiscareno and Carolyn C. Porco and Geraint H. Jones and Elias Roussos and Norbert Krupp and C. P. Paranicas and Sascha Kempf},
  pages={653 - 656}
The origin of Saturn's narrow G ring has been unclear. We show that it contains a bright arc located 167,495.6 ± 1.3 km from Saturn's center. This longitudinally localized material is trapped in a 7:6 corotation eccentricity resonance with the satellite Mimas. The cameras aboard the Cassini spacecraft mainly observe small (1 to 10 micrometers) dust grains in this region, but a sharp decrease in the flux of energetic electrons measured near this arc requires that it also contain larger… 
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