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A model of force balance in Saturn's magnetodisc

Arridge, C. S.; Achilleos, N.; Guio, P.

We present calculations of magnetic potential functions associated with the perturbation of Saturn's planetary magnetic field by a rotating, equatorially situated disc of plasma. Such structures are central to the dynamics of the rapidly rotating magnetospheres of Saturn and Jupiter. They are `fed' internally by sources of plasma from moons such a…

Erratum: Adiabatic chaos in the Prometheus-Pandora system

Shevchenko, Ivan I.

Wave angular momentum and the evolution of planetary rings

Dranikov, I. L.; Fridman, A. M.

A theory is proposed that provides angular momentum conservation through the acoustic drift mechanism for gap and ringlet formation in planetary rings. In this context, a new variant of drift mechanism is found, which is dominant if the collision frequency is of the order of the orbital frequency or less. An angular pseudo-momentum equation is der…