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Density Waves and the Viscous Overstability in Saturn's Rings
Marius Lehmann, Juergen Schmidt, Heikki Salo
This paper addresses resonantly forced spiral density waves in a dense planetary ring which is close to the threshold for viscous overstability. We solve numerically the hydrodynam…
Viscous Overstability in Saturn's Rings: Influence of Collective Self-gravity
Marius Lehmann, Juergen Schmidt, Heikki Salo
We investigate the influence of collective self-gravity forces on the nonlinear, large-scale evolution of the viscous overstability in Saturn's rings. We numerically solve the axis…
A Weakly Nonlinear Model for the Damping of Resonantly Forced Density Waves in Dense Planetary Rings
Marius Lehmann, Juergen Schmidt, Heikki Salo
In this paper we address the stability of resonantly forced density waves in dense planetary rings. Already by Goldreich & Tremaine (1978) it has been argued that density waves mig…
Hydrodynamic simulations of moonlet induced propellers in Saturn's rings: Application to Bleriot
Martin Seiß, Nicole Albers, Miodrag Sremcevic +5
One of the biggest successes of the Cassini mission is the detection of small moons (moonlets) embedded in Saturn's rings which cause S-shaped density structures in their close vic…
Dynamics of Self-Gravity Wakes in Dense Planetary Rings I. Pitch Angle
Shugo Michikoshi, Akihiko Fujii, Eiichiro Kokubo +1
We investigate the dynamics of self-gravity wakes in dense planetary rings. In particular, we examine how the pitch angle of self-gravity wakes depend on ring parameters using N-bo…
The opposition and tilt effects of Saturn's rings from HST observations
Heikki Salo, Richard G. French
The two major factors contributing to the opposition brightening of Saturn's rings are i) the intrinsic brightening of particles due to coherent backscattering and/or shadow-hiding…