Solar torsional oscillations: helioseismic measurements versus dynamo modelling

Details Solar torsional oscillations: helioseismic measurements versus dynamo modelling Solar torsional oscillations: helioseismic measurements versus dynamo modelling

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.517...35v&link_type=abstract

In: Proceedings of SOHO 12 / GONG+ 2002. Local and global helioseismology: the present and future, 27 October - 1 November 2002,

Computer Science

4

Sun: Interior, Sun: Oscillations

Scientific paper

We compare the variations in the solar internal rotation ("torsional oscillations"), as measured with SOHO MDI and GONG data, with predictions of a nonlinear axisymmetric mean-field dynamo model in a spherical shell, in which the only nonlinearity is due to action of the Lorentz force on the angular velocity. The overall picture of the torsional oscillations reveals a number of striking similarities between the model predictions and the seismic observations.

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