First View of the Solar Core from GOLF Acoustic Modes
Baudin, F.; Christensen-Dalsgaard, J.; Eff-Darwich, A.; Provost, J.; Berthomieu, G.; Pérez Hernández, F.; Lopes, I.; Turck-Chièze, S.; Ulrich, R. K.; Brun, A. S.; Boumier, P.; Grec, G.; Roca Cortés, T.; Basu, S.; Garcia, R. A.; Charra, J.; Gabriel, A. H.; Robillot, J. M.; Renaud, C.
France, Denmark, United States, United Kingdom, Spain
Abstract
After 8 months of nearly continuous measurements the GOLF instrument, aboard SOHO, has detected acoustic mode frequencies of more than 100 modes, extending from 1.4 mHz to 4.9 mHz. In this paper, we compare these results with the best available predictions coming from solar models. To verify the quality of the data, we examine the asymptotic seismic parameters; this confirms the improvements achieved in solar models during the last decade.