What we know about the sun's internal rotation from solar oscillations

Document Type

Article

Publication Date

2-1-1991

Abstract

The six available 5 minute period oscillation data sets have been inverted using the same method to determine the robust properties of the internal rotation rate of the Sun. The comprehensive result is that the rotation rate in the equatorial plane declines going inward between the surface and 0.6 of the radius and, with less certainty in the same region, the polar rate increases going inward. In other words, the surface-like differential rotation decreases with depth. The bulk of these changes occurs near the base of the convection zone. Going inward in the equatiorial plane from 0.6 to 0.4 of the radius, the rotation appears to be flat. Beneath 0.4 of the radius, we can make no appealing case for a rapidly rotating core. There is evidence that the internal rotation has changed systematically through this solar activity cycle. We also make a suggestion as to how oscillation data should be presented.

Identifier

0001486555 (Scopus)

Publication Title

Astrophysical Journal

External Full Text Location

https://doi.org/10.1086/169660

e-ISSN

15384357

ISSN

0004637X

First Page

649

Last Page

657

Issue

2

Volume

367

This document is currently not available here.

Share

COinS