On the damping of the bending waves in Saturn’s ring |
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| Authors: | Sandip K Chakrabarti |
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| Institution: | (1) International Center of Theoretical Physics, Trieste, Italy;(2) Theoretical Astrophysics, California Institute of Technology, Pasadena, USA;(3) Present address: Theoretical Astrophysics, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, 400005 Bombay |
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| Abstract: | We study numerically the motion of a single particle in the bending wave of finite thickness in Saturn’s ring. We include
the forcing due to the planet, a moon, the coriolis force and the self gravity of the ring. In particular, we compute the
variation of the velocity arising due to the variation of the amplitude and the phase of the epicyclic motion across the local
vertical height of the ring. We suggest that the dissipation of energy due to the collision of ring particles in this shear
layer damps out the bending wave of Saturn’s ring at the 5:3 vertical resonance of Mimas within a distance of 150 km from
the site of its launching as is observed in Voyager data. |
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| Keywords: | planetary rings Saturn |
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