Bibcode
Eff-Darwich, A.; Korzennik, S. G.
Referencia bibliográfica
In: Proceedings of SOHO 12 / GONG+ 2002. Local and global helioseismology: the present and future, 27 October - 1 November 2002, Big Bear Lake, CA, USA. Edited by H. Sawaya-Lacoste, ESA SP-517, Noordwijk, Netherlands: ESA Publications Division, ISBN 92-9092-827-1, 2003, p. 267 - 270
Fecha de publicación:
2
2003
Número de citas
1
Número de citas referidas
1
Descripción
We have inverted most of the available rotational frequency splittings
at intermediate degrees. Namely, LOWL data from 1994 to 2000, GONG data
from 1995 to 2001, and, MDI data from 1996 to 2002. Our purpose was to
look for any temporal variation of the tachocline and its relation to
the solar activity cycle. However, we did not find any significant
change compatible with the three data sets. From our analysis, we
estimated an upper limit on the temporal variation of Ω/2π of 3
nHz. This value is commensurable with the sensitivity of the present
observational data to changes in the rotation rate of the tachocline.