Depth and latitude dependence of solar rotation

Details Depth and latitude dependence of solar rotation Depth and latitude dependence of solar rotation

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...314l..21b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 314, March 1, 1987, p. L21-L26.

Computer Science

Sound

92

Doppler Effect, P Waves, Solar Oscillations, Solar Rotation, Acoustic Velocity, Fourier Analysis, Legendre Functions, Spatial Resolution, Stellar Models

Scientific paper

A 15-day time series of spatially resolved full-disk Doppler observations is used to measure the dependence of p-mode oscillation frequencies on the mode azimuthal order m. This dependence may be used to infer the depth and latitude variation of the solar rotation. The results are consistent with solar models that have approximately the surface latitudinal differential rotation within the convection zone, but no latitudinal differential rotation in the radiative interior. The data do not make it possible to distinguish between models for which the angular rotation rate within the convection zone is a function of latitude alone, and those for which it is constant on cylindrical surfaces. Weak evidence for a pole-equator asymmetry in the sound speed is found.

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