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Structure formation from non-Gaussian initial conditions: multivariate biasing, statistics, and comparison with N-body simulations
Tommaso Giannantonio, Cristiano Porciani
We study structure formation in the presence of primordial non-Gaussianity of the local type with parameters f_NL and g_NL. We show that the distribution of dark-matter halos is na…
First-year Sloan Digital Sky Survey-II (SDSS-II) supernova results: consistency and constraints with other intermediate-redshift datasets
H. Lampeitl, R. C. Nichol, H. -J. Seo +28
We present an analysis of the luminosity distances of Type Ia Supernovae from the Sloan Digital Sky Survey-II (SDSS-II) Supernova Survey in conjunction with other intermediate reds…
Constraints on primordial isocurvature perturbations and spatial curvature by Bayesian model selection
Jussi Valiviita, Tommaso Giannantonio
We present posterior likelihoods and Bayesian model selection analysis for generalized cosmological models where the primordial perturbations include correlated adiabatic and cold…
New constraints on parametrised modified gravity from correlations of the CMB with large scale structure
Tommaso Giannantonio, Matteo Martinelli, Alessandra Silvestri +1
We study the effects of modified theories of gravity on the cosmic microwave background (CMB) anisotropies power spectrum, and in particular on its large scales, where the integrat…