Towards a theory for the uranian rings

  title={Towards a theory for the uranian rings},
  author={P. Goldreich and S. Tremaine},
  • P. Goldreich, S. Tremaine
  • Published 1979
  • Physics
  • Nature
  • Interparticle collisions, radiation drag and differential precession all tend to disrupt the rings of Uranus. The first two effects lead to radial spreading which would disrupt a free ring in ≲108 yr. We propose that the rings are confined in radius by gravitational torques from a series of small satellites that orbit within the ring system. Differential precession tends to destroy the apse alignment of the elliptical ε ring. We suggest that apse alignment is maintained by the self-gravity of… CONTINUE READING
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