A search for solar g modes in the GOLF data

TitleA search for solar g modes in the GOLF data
Publication TypeJournal Article
Year of Publication2002
AuthorsGabriel, A. H., Baudin F., Boumier P., García R. A., Turck-Chièze S., Appourchaux T., Bertello L., Berthomieu G., Charra J., Gough D. O., Pallé P. L., Provost J., Renaud C., Robillot J.-M., Roca_Cortés T., Thiery S., and Ulrich R. K.
JournalAstronomy and Astrophysics
Date PublishedAug

{With over 5 years of GOLF data having some 90% continuity, a new attempt has been made to search for possible solar g modes. Statistical methods are used, based on the minimum of assumptions regarding the solar physics; namely that mode line-widths are small compared with the inverse of the observing time, and that modes are sought in the frequency interval 150 to 400 mu Hz. A number of simulations are carried out in order to understand the expected behaviour of a system consisting principally of a solar noise continuum overlaid with some weak sharp resonances. The method adopted is based on the FFT analysis of a time series with zero-padding by a factor of 5. One prominent resonance at 284.666 mu Hz coincides with a previous tentative assignment as one member of an n=1