It is widely accepted that solar g-modes have lifetimes much longer that the duration of current observation sequences. Under these circumstances, complex data analysis techniques are unlikely to add significantly to the basic method of searching for notable spectrum peaks in the Fourier transform of the longest duration observations available. However, this argument does not take account of the possibility that the cavity resonating might change its frequency with time, for example as a result of solar cycle modulation or other temporal changes. Whilst such variations are theoretically unpredicted, we note that very small changes in resonant frequencies would be sufficient to spread a g-mode energy peak over several bins in the spectrum and thus render it undetectable. We are examining a number of techniques for recovering this dispersed energy, in a search for g-mode resonances, based upon the GOLF data set.
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