Large Scale Flows From Eigenfunction Fitting

Details Large Scale Flows From Eigenfunction Fitting Large Scale Flows From Eigenfunction Fitting

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spd....40.0705s&link_type=abstract

American Astronomical Society, SPD meeting #40, #7.05; Bulletin of the American Astronomical Society, Vol. 41, p.813

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It is well known that the eigenfunctions, as well as the eigenfrequencies, of normal modes are perturbed by flows and other asphericities. In the case of meridional flows, it is known that while the perturbations to the frequencies are second order, the eigenfunctions are perturbed at first order in the strength of the meridional flow. This leads to the question of whether one might be able to measure meridional flows using the observed eigenfunction perturbations. Here we discuss how well we expect to be able to do this and show some preliminary analysis of MDI data.

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