The Solar Nuclear Region as Probed by Acoustic-Gravity Waves

Details The Solar Nuclear Region as Probed by Acoustic-Gravity Waves The Solar Nuclear Region as Probed by Acoustic-Gravity Waves

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aard.conf..128l&link_type=abstract

ASTRONOMY AND ASTROPHYSICS Recent Developments. Proceedings of the 10th Portuguese Meeting. Held 27-28 July 2000 in CENTRA, Lisb

Astronomy and Astrophysics

Astrophysics

Scientific paper

Near four years of quasi-continuous measurements have been obtained with the seismic experiments VIRGO, MDI/SOI and GOLF aboard of the SoHO satellite. In particular, the GOLF instrument has measured frequencies of more than 100 acoustic modes of low-degree, extending from 1.4 mHz to 4.9 mHz. More recently, through an improved analysis technique, it has been possible to identify more acoustic-gravity waves with frequencies in the low end of the spectrum. Here I will highlight the implications of these results to the modelling of the Sun. In particular, I will also discuss the importance of the gravity modes for inversions and how they can change our knowledge of the solar structure. This new seismic data largely constrains the solar model down to around 0.1 R&sun;, while there remain differences, even closer to the centre. Moreover, I will also discuss the extreme sensitivity of the inversion results to the values of the frequencies.

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