The impact of non-Gaussianity upon cosmological forecasts

  title={The impact of non-Gaussianity upon cosmological forecasts},
  author={A. Repp and Istvan Szapudi and Julien Carron and Melody Wolk},
  journal={Monthly Notices of the Royal Astronomical Society},
The primary science driver for 3D galaxy surveys is their potential to constrain cosmological parameters. Forecasts of these surveys' effectiveness typically assume Gaussian statistics for the underlying matter density, despite the fact that the actual distribution is decidedly non-Gaussian. To quantify the effect of this assumption, we employ an analytic expression for the power spectrum covariance matrix to calculate the Fisher information for BAO-type model surveys. We find that for typical… 

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