Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001sf2a.conf..109c&link_type=abstract
Abstracts from SF2A-2001: Semaine de l'Astrophysique Francaise, meeting held in Lyon, France, May 28-June 1st, 2001, Eds.: F. Co
Astronomy and Astrophysics
Astrophysics
Scientific paper
Helioseismic observations of long duration now open the possibility of studying the variation of the interior of the Sun during its cycle of activity. In particular, the possible dynamic or structure variations of the interface between the convective zone and the radiative interior, or tachocline, is of great interest to constrain solar dynamo models and to understand the phenomena at the origin of the cycle of activity observed at the surface. We have analysed the observations obtained during the 6 last years by the LOWL instrument located at Mauna Loa, Hawaii as well as the observations in integrated disc covering more than one solar cycle (1984-2000) by MARK-I instrument at the Peak del Teide, Tenerife. The results concerning the signature of the solar activity on the pressure modes of low and medium degrees and seeks for possible variations of the dynamic of the tachocline will be presented and replaced in the theoretical context.
Corbard Thierry
Jiménez-Reyes Sebastián J.
Thompson Michael J.
Tomczyk Steve
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