Helioseismic Constraints on the Gradient of Angular Velocity at the Base of the Solar Convection Zone

Details Helioseismic Constraints on the Gradient of Angular Velocity at the Base of the Solar Convection Zone Helioseismic Constraints on the Gradient of Angular Velocity at the Base of the Solar Convection Zone

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...469l..61k&link_type=abstract

Astrophysical Journal Letters v.469, p.L61

Astronomy and Astrophysics

Astronomy

136

Methods: Data Analysis, Convection, Sun: Rotation, Sun: Interior, Sun: Activity, Sun: Oscillations

Scientific paper

The layer of transition from the nearly rigid rotation of the radiative interior to the latitudinal differential rotation of the convection zone plays a significant role in the internal dynamics of the Sun. Using rotational splitting coefficients of the p-mode frequencies, obtained during 1986--1990 at the Big Bear Solar Observatory, we have found that the thickness of the transitional layer is 0.09 +/- 0.04 solar radii (63 +/- 28 Mm), and that most of the transition occurs beneath the adiabatically stratified part of the convection zone, as suggested by the dynamo theories of the 22 yr solar activity cycle.

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