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Renewed acceleration of the 24° N jet on Jupiter
Rogers, John H.; Mettig, Hans-Jörg; Peach, Damian
Jupiter's eastward jet at 24° N, which formerly had the fastest winds on the planet, has maintained a less extreme speed of ∼135 m/s since 1991, carrying a series of long-lived vortices at 125 m/s. In 2002-2003, as the albedo of the adjacent North Temperate Belt increased, the tracks of the vortices accelerated slightly, and they had disappeared b…
Simulation of post-impact rotational changes through multi-dimensional parametrization
Gauchez, Damien; Souchay, Jean
In this paper we propose firstly a full parametrization of an impact on a target body considered as ellipsoidal, including several geometrical parameters which are generally not included. Then we construct a more detailed and complete theoretical model of the rotational changes of the target body arising from a single impact, by taking into accoun…
The effect of a dense atmosphere on the tidally induced potential of Titan
Karatekin, Özgür; van Hoolst, Tim
The effect of the dense atmosphere of Titan on the tidal variations of the external gravitational potential of degree two is quantified. The atmospheric tides perturb the external gravitational potential of Titan in two ways. First, the atmosphere itself contributes directly to the external gravitational potential with a period of 15.945 days. Sec…