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.
@article{arxiv.1602.06833,
title = {Denoising of gravitational-wave signal GW150914 via total-variation methods},
author = {Alejandro Torres-Forné and Antonio Marquina and José A. Font and José M. Ibáñez},
journal= {arXiv preprint arXiv:1602.06833},
year = {2016}
}