Small frequency separations as seen in the autocorrelation function of the whole-disk measurements

Details Small frequency separations as seen in the autocorrelation function of the whole-disk measurements Small frequency separations as seen in the autocorrelation function of the whole-disk measurements

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.538..331k&link_type=abstract

In: Second Eddington Workshop: Stellar structure and habitable planet finding, 9 - 11 April 2003, Palermo, Italy. Edited by F. F

Physics

1

Sun: Waves, Methods: Numerical, Star: Oscillations

Scientific paper

We address the origin of the apparent modulation in the amplitudes of the even and odd peaks in the autocorrelation function of whole-disk measurements, and show that this modulation is directly related to the small frequency separations of the low-degree p-modes. This modulation can be used for estimating the small separations when the data quality is insufficient for reliable identification of oscillation frequencies in noisy power spectra.

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