Evolution of the Power Spectrum in Non‐Gaussian Models

2001/02/12 by Naoki Seto · 1 citation
Physics and Astronomy · #Astronomy and Astrophysical Research #Constraint (computer-aided design) #Cosmology and Gravitation Theories #Electromagnetic spectrum #Function (biology) #Galaxies: Formation, Evolution, Phenomena #Nonlinear system #Power (physics) #Simple (philosophy) #Spectral density #Spectrum (functional analysis) #astro-ph

paper · pdf · doi:10.1086/320953

25 pages, 7 figures, to appear in ApJ (553, Jun 1)

arxiv created 2001/02/12 · openalex publication_date 2001/06/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

Evolution of the power spectrum is studied for non-Gaussian models of structure formation. We generalize the dark-matter approach to these models and find that the evolved spectrum at a weakly nonlinear regime is mainly determined by a simple integral of the dark-matter halo mass function in this approach. We also study the change of the nonlinear spectrum within the current observational constraint of the primordial non-Gaussianity.

Citations

• First Estimations of Cosmological Parameters From BOOMERANG
• Measurements of Ω and Λ from 42 High‐Redshift Supernovae
• Constraining Primordial Non‐Gaussianity with the Abundance of High‐Redshift Clusters
• Constraints on Primordial Non‐Gaussianity from the High‐Redshift Cluster MS 1054−03
• A Bayesian Estimate of the Skewness of the Cosmic Microwave Background
• Large-scale structure, the cosmic microwave background and primordial non-Gaussianity
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant

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