Anti-diffusive Momentum Transport and Time-variability in the Solar Interior

Details Anti-diffusive Momentum Transport and Time-variability in the Solar Interior Anti-diffusive Momentum Transport and Time-variability in the Solar Interior

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aipc..948..327k&link_type=abstract

UNSOLVED PROBLEMS IN STELLAR PHYSICS: A Conference in Honor of Douglas Gough. AIP Conference Proceedings, Volume 948, pp. 327-3

Physics

Solar Interior, Radii, Mhd Waves, Plasma Waves, Turbulence, Acoustic Gravity Waves, Tides, And Compressional Waves

Scientific paper

For parameter values typical of the solar interior, turbulent eddy viscosity is shown to be negative, with turbulence enhancing the radial shear. Both magnetic diffusivity and thermal diffusivity are severely quenched by flow shear and Alfvén-gravity waves, with values much smaller than the magnitude of the eddy viscosity. The results imply that the solar tachocline is likely to develop too strong a radial shear to be a stationary Hartmann layer, exhibiting complex time variability.

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