Computer Science
Scientific paper
Jan 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.464..653m&link_type=abstract
In: Proceedings of the SOHO 10/GONG 2000 Workshop: Helio- and asteroseismology at the dawn of the millennium, 2-6 October 2000,
Computer Science
7
Solar Oscillation, Solar Background Spectra
Scientific paper
We develop a simple model based on a dumped harmonic oscillator excited by a random forcing, with the aim to reproduce the observed trends in the intensity (I) and velocity (V) phase difference and coherence spectra. The model accounts for an oscillation mode embedded in a solar background which is partly correlated to the mode. The complex vectors I and V and the corresponding I-V phase difference and coherence spectra are computed. We also computed the I and V power spectra. For comparison we used the GONG data at l = 17 and the average of the data at n = 2 from l = 160 to l = 200 computed by Oliviero et al. (2001), these proceedings. The obtained results are interesting to understand how the convective solar background affects the spectra and in what fraction it is correlated to the modes.
Magrí Maria
Oliviero Maurizio
Severino Giuseppe
Straus Th.
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