Bibcode
DOI
Jimenez, Antonio; Perez Hernandez, Fernando; Claret, Antonio; Palle, Pere Lluis; Regulo, Clara; Roca-Cortés, T.
Bibliographical reference
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 435, no. 2, p. 874-880
Advertised on:
11
1994
Journal
Citations
27
Refereed citations
22
Description
The solar p-mode spectrum of very low l has already been measured with
high accuracy for a sufficiently long period of time to permit the
search for solar cycle variations. The longest one-site velocity
observations for low l solar p-modes (Tenerife) has been used to measure
the l = 1 mode splitting at the two extremes of the solar activity
cycle. The results found exclude the rigid body rotation for the Sun.
When taking the extreme values measured for the splitting, a solar core
rotation between 2 and 4 times larger than that at the surface is
obtained. Also, the observational results indicate an increase (1.3-2
times) of the rotation rate at the maximum of the solar activity cycle.