Radial and latitudinal gradients in the solar internal angular velocity

Details Radial and latitudinal gradients in the solar internal angular velocity Radial and latitudinal gradients in the solar internal angular velocity

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988esasp.286...73r&link_type=abstract

In ESA, Seismology of the Sun and Sun-Like Stars p 73-80 (SEE N89-25819 19-92)

Computer Science

4

Angular Velocity, Solar Interior, Velocity Distribution, Radial Velocity, Solar Oscillations, Solar Rotation

Scientific paper

The frequency splittings of intermediate-degree (3 to 170 deg) p-mode oscillations obtained from a 16-day subset of observations were analyzed. Results show evidence for both radial and latitudinal gradients in the solar internal angular velocity. From 0.6 to 0.95 solar radii, the solar internal angular velocity increases systematically from 440 to 463 nHz, corresponding to a positive radial gradient of 66 nHz/solar radius for that portion of the solar interior. Analysis also indicates that the latitudinal differential rotation gradient which is seen at the solar surface persists throughout the convection zone, although there are indications that the differential rotation might disappear entirely below the base of the convection zone. The analysis was extended to include comparisons with additional observational studies and between earlier results and the results of additional inversions of several of the observational datasets. All the comparisons reinforce conclusions regarding the existence of radial and latitudinal gradients in the internal angular velocity.

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