2004/02/29 by Domenico Tocchini-Valentini, D. Tocchini-Valentini, M. Douspis +3 · 1 citation
Physics and Astronomy · #Astronomy and Astrophysical Research #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph
paper · pdf · doi:10.1111/j.1365-2966.2005.08771.x
published as Mon.Not.Roy.Astron.Soc. 359 (2005) 31-35 · revised version, conclusions unchanged, 7 figures, accepted for publication in MNRAS
arxiv created 2004/12/26 · openalex publication_date 2005/04/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We develop a new approach towards a high-resolution non-parametric reconstruction of the primordial power spectrum using the Wilkinson Microwave Anisotropy Probe (WMAP) cosmic microwave background temperature anisotropies that we confront with Sloan Digital Sky Survey large-scale structure data in the range k∼ 0.01–0.1 h Mpc−1. We utilize the standard Λ cold dark matter cosmological model but we allow the baryon fraction to vary. In particular, for the concordance baryon fraction, we compare indications of a possible feature at k∼ 0.05 h Mpc−1 in WMAP data with suggestions of similar features in large-scale structure surveys.