MIGRATION OF SMALL MOONS IN SATURN's RINGS
MIGRATION OF SMALL MOONS IN SATURN's RINGS
The motions of small moons through Saturn's rings provide excellent tests of radial migration models. In theory, torque exchange between these moons and ring particles leads to radial drift. We predict that moons with Hill radii r_H ~ 2-24 km should migrate through the A ring in 1000 yr. In …