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- W1998149785 abstract "We investigate the evolution of the skewness of the distribution of density fluctuations in CDM models with both Gaussian and non--Gaussian initial fluctuations. We show that the method proposed by Coles & Frenk (1991), which uses the skewness of galaxy counts to test the hypothesis of Gaussian primordial density fluctuations, is a potentially powerful probe of initial conditions. As expected, the mass distribution in models with initially non--Gaussian fluctuations shows systematic departures from the Gaussian behaviour on intermediate to large scales. We investigate the effect of peculiar velocity distortions and normalisation upon the relationship between skewness and variance. These effects are generally small for the models we consider. Comparing our results to the QDOT measurements of the skewness, we find that our initially positive--skew models are clearly excluded by this analysis, but the available data do not rule out the negative--skew models." @default.
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- W1998149785 date "1993-10-01" @default.
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- W1998149785 title "Skewness as a test of non-Gaussian primordial density fluctuations" @default.
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- W1998149785 doi "https://doi.org/10.1093/mnras/264.3.749" @default.
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