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The Solar Core as Never Seen Before

Auteur

Korzennik Sylvain

Institution

Harvard-Smithsonian Center for Astrophysics

Theme

Solar and stellar modelling
Auteur(s) supplémentaire(s)Eff-Darwich, Antonio
Institution(s) supplémentaire(s)Instituto de Astrofisica de Canarias, Tenerife, Spain

Abstract

One of the main drawbacks in the analysis of the dynamics of the solar core
comes from the lack of consistent data sets that cover the low and
intermediate degree range ($ell=1,200$). It is usually necessary to merge
data obtained from different instruments and/or fitting methodologies and
hence one introduces undesired systematic errors.

In contrast, we present the results of analyzing MDI rotational splittings
derived by a single fitting methodology applied to 4604-, 2304-, etc..., down
to 144-day long time series. The direct comparison of these data sets and the
analysis of the numerical inversion results have allowed us to constrain the
dynamics of the solar core and to establish the accuracy of these data as a
function of the length of the time-series.
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