Bibcode
Mateos, I. MartÍn; Pallé, P. L.
Bibliographical reference
Solar Physics, v. 189, Issue 2, p. 241-260 (1999).
Advertised on:
11
1999
Journal
Citations
5
Refereed citations
5
Description
The aim of the present work is the detection of solar g-modes, by means
of a new observational strategy based on the exploitation of their
spatial and temporal properties. The basic data, obtained at the
Observatorio del Teide in 1993, consists of daily solar velocity
measurements taken continuously and sequentially at six different and
symmetric positions on the solar disk. By correlating the time series
resulting from the reduction process, from different solar disk
positions and considering the geometrical properties of different modes
(l,m) on the Sun's surface, some of these can be selectively eliminated
or enhanced. Moreover, the main spectral features present in the
resulting power spectra must have precise phase relations if they
correspond to global solar g-modes. The severe constraints established
by the above properties have been applied to the best observed series
(summer 1993). As a result, a discrete series of peaks have been
selected that fulfill all the imposed conditions and which can therefore
be interpreted as being of solar origin.