Toward the detection of gravitational waves under non-Gaussian noises(2)Independent component analysis

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  • MORISAKI Soichiro
    Research Center for the Early Universe (RESCEU), Graduate School of Science, The University of Tokyo Department of Physics, Graduate School of Science, The University of Tokyo
  • YOKOYAMA Jun’ichi
    Research Center for the Early Universe (RESCEU), Graduate School of Science, The University of Tokyo Department of Physics, Graduate School of Science, The University of Tokyo Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU), UTIAS, WPI, The University of Tokyo
  • EDA Kazunari
    Research Center for the Early Universe (RESCEU), Graduate School of Science, The University of Tokyo Department of Physics, Graduate School of Science, The University of Tokyo
  • ITOH Yousuke
    Research Center for the Early Universe (RESCEU), Graduate School of Science, The University of Tokyo

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タイトル別名
  • Toward the detection of gravitational waves under non-Gaussian noises II. Independent component analysis

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<p>We introduce a new analysis method to deal with stationary non-Gaussian noises in gravitational wave detectors in terms of the independent component analysis. First, we consider the simplest case where the detector outputs are linear combinations of the inputs, consisting of signals and various noises, and show that this method may be helpful to increase the signal-to-noise ratio. Next, we take into account the time delay between the inputs and the outputs. Finally, we extend our method to nonlinearly correlated noises and show that our method can identify the coupling coefficients and remove non-Gaussian noises. Although we focus on gravitational wave data analysis, our methods are applicable to the detection of any signals under non-Gaussian noises.</p>

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