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arXiv · 1602.06833

Denoising of gravitational-wave signal GW150914 via total-variation methods

Alejandro Torres-Forné·Antonio Marquina·José A. Font·José M. Ibáñez
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Abstract

We apply a regularized Rudin-Osher-Fatemi total variation (TV) method to denoise the transient gravitational wave signal GW150914. We have previously applied TV techniques to denoise numerically generated grav- itational waves embedded in additive Gaussian noise, obtaining satisfactory results irrespective of the signal morphology or astrophysical origin. We find that the non-Gaussian, non-stationary noise from the gravitational wave event GW150914 can also be successfully removed with TV-denoising methods. The quality of the de- noised waveform is comparable to that obtained with the Bayesian approach used in the discovery paper [1]. TV-denoising techniques may thus offer an additional viable approach for waveform reconstruction.

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Alejandro Torres-Forné, Antonio Marquina, José A. Font, José M. Ibáñez. 2016-02-22. Denoising of gravitational-wave signal GW150914 via total-variation methods. https://arxiv.org/abs/1602.06833

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