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Published May 26, 1967 | public
Journal Article

Rotation of the Sun

Abstract

Dicke has interpreted his recent measurement of the sun's oblateness as implying a fast (1.8-day period) rotation of the solar radiative interior. We find that differentially rotating solar models, such as the one proposed by Dicke, are unstable. The rate of turbulent diffusion in the unstable regions of these models is so rapid that it appears to preclude a fast spinning solar interior. As a corollary of the stability analysis, we conclude that the loss of a significant fraction of a star's angular momentum must be accompanied by the mixing of material below its convective zone. Such mixing inevitably leads to the depletion of lithium in the star's photosphere.

Additional Information

© 1967 American Association for the Advancement of Science. Received 4 April 1967. We are grateful to Drs. F. H. Busse, A. P. Ingersoll, and W. V. R. Malkus for many helpful discussions.

Additional details

Created:
August 22, 2023
Modified:
October 25, 2023