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Evolution of the Rotational Motion of a Planet with a Liquid core

Published online by Cambridge University Press:  12 April 2016

V. V. Sidorenko
V. V. Sidorenko*
Affiliation:
Keldysh Institute of Applied Mathematics Moscow, Russia

Abstract

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Secular changes in the rotational motion of a planet due to dissipation of energy in its core are investigated. It is assumed that the effect of a liquid core is equivalent to the action on a “frozen” planet of a special type of nonconservative torque. The Bogoliuboff-Mitropolsky method is used to explain the secular effects. The following qualitative features of the evolution of the motion are established: the fast rotation of a planet gradually becomes slower and the inclination of its equator to the orbital plane gradually increases.

Type
Rotation of Solar System Objects
Information
International Astronomical Union Colloquium , Volume 165: Dynamics and Astrometry of Natural and Artificial Celestial Bodies , 1997 , pp. 313 - 318
Copyright
Copyright © Kluwer 1997

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