A method to detect p-mode oscillations in solar-like star signals

Details A method to detect p-mode oscillations in solar-like star signals A method to detect p-mode oscillations in solar-like star signals

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...396..745r&link_type=abstract

Astronomy and Astrophysics, v.396, p.745-751 (2002)

Astronomy and Astrophysics

Astrophysics

8

Methods: Data Analysis, Stars: Oscillations

Scientific paper

A good example of finding a signal buried in noise, a common problem in Astrophysics, is the search for stellar oscillations in the acoustic power spectrum of solar-like stars. In this work it is shown that it is possible to find this type of signal in the power spectrum of stellar oscillations if the peaks are ``almost'' equally spaced in frequency, as the asymptotic theory for acoustic modes predicts. This signature of the power spectra of the p-mode oscillations in solar-like stars is used to design a method that allows the identification of the signal even when this signal is completely buried in noise, sigma_signal /sigma_signal +noise < 1/25.

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