Foreground removal using fastica: A showcase of LOFAR-EoR

  title={Foreground removal using fastica: A showcase of LOFAR-EoR},
  author={Emma Chapman and Filipe B. Abdalla and Geraint J. A. Harker and Vibor Jeli'c and Panagiotis Labropoulos and Saleem Zaroubi and Michiel Brentjens and A. G. de Bruyn and L{\'e}on V. E. Koopmans},
  journal={Monthly Notices of the Royal Astronomical Society},
We introduce a new implementation of the fastica algorithm on simulated Low Frequency Array Epoch of Reionization data with the aim of accurately removing the foregrounds and extracting the 21-cm reionization signal. We find that the method successfully removes the foregrounds with an average fitting error of 0.5 per cent and that the 2D and 3D power spectra are recovered across the frequency range. We find that for scales above several point spread function scales, the 21-cm variance is… Expand
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