Towards a better understanding of tidal dissipation at corotation layers in differentially rotating stars and planets
Abstract
Star-planet tidal interactions play a significant role in the dynamical evolution of close-in planetary systems. We investigate the propagation and dissipation of tidal inertial waves in a stellar/planetary convective region. We take into account a latitudinal differential rotation for the background flow, similar to what is observed in the envelope of low-mass stars like the Sun. Previous works have shown that differential rotation significantly alters the propagation and dissipation properties of inertial waves. In particular, when the Doppler-shifted tidal frequency vanishes in the fluid, a critical layer forms where tidal dissipation can be greatly enhanced. Our present work develops a local analytic model to better understand the propagation and dissipation properties of tidally forced inertial waves at critical layers.
Keywords
Cite
@article{arxiv.1710.08663,
title = {Towards a better understanding of tidal dissipation at corotation layers in differentially rotating stars and planets},
author = {A. Astoul and S. Mathis and C. Baruteau and Q. André},
journal= {arXiv preprint arXiv:1710.08663},
year = {2017}
}
Comments
6 pages, 4 figures, SF2A proceeding