Angular momentum extraction by gravity waves in the Sun

Details Angular momentum extraction by gravity waves in the Sun Angular momentum extraction by gravity waves in the Sun

2002-06-27

arxiv.org/abs/astro-ph/0206479v1

Astronomy and Astrophysics

Astrophysics

9 pages, 3 figues, accepted by Astrophysical Journal Letter, 26 June 2002

Scientific paper

10.1086/342526

We review the behavior of the oscillating shear layer produced by gravity waves below the surface convection zone of the Sun. We show that, under asymmetric filtering produced by this layer, gravity waves of low spherical order, which are stochastically excited at the base of the convection zone of late type stars, can extract angular momentum from their radiative interior. The time-scale for this momentum extraction in a Sun-like star is of the order of 10^7 years. The process is particularly efficient in the central region, and it could produce there a slowly rotating core.

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