Abstract
We study the effect of the change of solar model parameters on the measurements of the horizontal velocity flow components based on the analysis of high-degree modes using the ring-diagram local helioseismic technique. We show that changing the equation of state, opacities, surface heavy-element abundances or the modeling of convection do not affect the sub-photospheric flow field measurements. However, the modeling of outermost layers can affect the measurements if an important amount of high radial order modes (high-frequency modes) are included in the analysis.
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Zaatri, A., Provost, J., Corbard, T. et al. Sensitivity of the sub-photospheric flow fields inferred from ring-diagram analysis to the change on the solar model. Astrophys Space Sci 328, 135–138 (2010). https://doi.org/10.1007/s10509-009-0191-7
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DOI: https://doi.org/10.1007/s10509-009-0191-7