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Testing the Gravitational Instability Hypothesis?
A. Babul, D. Weinberg, A. Dekel +1
We challenge a widely accepted assumption of observational cosmology: that successful reconstruction of observed galaxy density fields from measured galaxy velocity fields (or vice…
Weakly Non-Linear Gaussian Fluctuations and the Edgeworth Expansion
R. Juszkiewicz, D. Weinberg, P. Amsterdamski +2
We calculate the cosmological evolution of the 1-point probability distribution function (PDF), using an analytic approximation that combines gravitational perturbation theory with…
Fourier Analysis of Redshift Space Distortions and the Determination of Omega
Shaun Cole, Karl B. Fisher, David H. Weinberg
The peculiar velocities of galaxies distort the pattern of galaxy clustering in redshift space, making the redshift space power spectrum anisotropic. In the linear regime, the stre…
Cosmic Voids and Biased Galaxy Formation
Blane Little, David H. Weinberg
Using cosmological -body simulations and the void probability function (VPF), we investigate the statistical properties of voids within a wide range of initially Gaussian models…