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The Statistics of Cosmological Lyman-alpha Absorption
Dipak Munshi, Peter Coles, Matteo Viel
We study the effect of the non-Gaussianity induced by gravitational evolution upon the statistical properties of absorption in quasar (QSO) spectra. Using the generic hierarchical…
Clustering of sub-millimeter galaxies in a self-regulated baryon collapse model
Jun-Qing Xia, M. Negrello, A. Lapi +3
We have investigated the Cosmic Infrared Background (CIB) anisotropies in the framework of the physical evolutionary model for proto-spheroidal galaxies by Granato et al. (2004). A…
Coarse-Grained Cosmological Perturbation Theory
Massimo Pietroni, Gianpiero Mangano, Ninetta Saviano +1
Semi-analytical methods, based on Eulerian perturbation theory, are a promising tool to follow the time evolution of cosmological perturbations at small redshifts and at mildly non…
Massive Neutrinos and the Non-linear Matter Power Spectrum
Simeon Bird, Matteo Viel, Martin G. Haehnelt
We perform an extensive suite of N-body simulations of the matter power spectrum, incorporating massive neutrinos in the range M = 0.15-0.6 eV, probing the non-linear regime at sca…
The Non-Linear Matter Power Spectrum in Warm Dark Matter Cosmologies
Matteo Viel, Katarina Markovic, Marco Baldi +1
We investigate the non-linear evolution of the matter power spectrum by using a large set of high-resolution N-body/hydrodynamic simulations. The linear matter power in the initial…
Neutrino Signatures on the High Transmission Regions of the Lyman-alpha Forest
Francisco Villaescusa-Navarro, Mark Vogelsberger, Matteo Viel +1
We quantify the impact of massive neutrinos on the statistics of low density regions in the intergalactic medium (IGM) as probed by the Lyman-alpha forest at redshifts z=2.2--4. Ba…