Abstract :
[en] We present a machine learning based pipeline to analyze unmodeled gravitational wave (GW) transients of less than 10 s. The convolutional neural network (CNN) is based on a U-NET architecture and takes as input data from GW interferometers represented as time-frequency maps, returning a spectrogram without the background noise. The CNN has been trained on simulated data, using a generated Gaussian background noise and injecting GW signals from core-collapse supernovae (CCSNe) simulations. The pipeline is able to successfully denoise spectrograms and recognize as signals also CCSNe waveforms for which it has not been trained on.
Funding text :
I would like to thank Prof. Maxime Fays for the idea of the project and Prof. Jean-Rene Cudell for the discussions and suggestions on the topic. This work was supported by the Fonds de la Recherche Scientifique-FNRS, Belgium, under grant No. 4.4501. The author is grateful for computational resources provided by the LIGO Laboratory and supported by National Science Foundation Grants PHY-0757058 and PHY-0823459.
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