Bibcode
Garcia, R. A.; Pallé, P. L.; Turck-Chièze, S.; Osaki, Y.; Shibahashi, H.; Jefferies, S.; GOLF Team
Referencia bibliográfica
Structure and Dynamics of the Interior of the Sun and Sun-like Stars SOHO 6/GONG 98 Workshop Abstract, June 1-4, 1998, Boston, Massachusetts, p. 177
Advertised on:
0
1998
Número de citas
1
Número de citas referidas
1
Descripción
The power spectrum of ~630 days of full-disk solar velocity data,
provided by the GOLF spectrophotometer aboard SOHO, has revealed the
presence of mode-like structure well beyond the acoustic cut-off
frequency for the solar atmosphere (nuac ~5.4 mHz). This kind
of structure has already been observed in intermediate and high spatial
resolution oscillation data (Duvall et al. 1991), but never before in
integrated data like BiSON or IRIS. This is probably due to the higher
level of noise that are inherent to the earth-based experiments. In this
contribution, we analyse the observed peak structure (nuac
< ν < 7.5 mHz) and we describe the theoretical analysis of such
signal.