Rotation and angular momentum transport

Details Rotation and angular momentum transport Rotation and angular momentum transport

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997assl..225..187z&link_type=abstract

SCORe'96 : Solar Convection and Oscillations and their Relationship, Proceedings of a workshop, held in Aarhus, Denmark, May 27

Physics

1

Solar Physics, Rotation, Angular Momentum Transport

Scientific paper

The internal rotation law of the Sun depends both on the rate at which angular momentum has been lost by the wind, and on the efficiency of the processes which extract that angular momentum from the radiative interior. The transport by the meridian circulation and the associated hydrodynamical instabilities is insufficient to yield the flat profile which is deduced from helioseismology, and therefore other processes must be operating. One possibility is magnetic torquing, but some observations are hard to reconcile with it. Another is the transport through the internal waves emitted by the convection zone and this mechanism seems the most promising: according to recent estimates, it should operate on a timescale of a about $10^7$ years, i.e. three orders of magnitude less than the present spin-down time.

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