A new search for features in the primordial power spectrum
Astrophysics
2009-11-10 v3
Abstract
We develop a new approach toward a high resolution non-parametric reconstruction of the primordial power spectrum using WMAP cosmic microwave background temperature anisotropies that we confront with SDSS large-scale structure data in the range k~0.01-0.1 h/Mpc. We utilise the standard LambdaCDM 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 in WMAP data with suggestions of similar features in large scale structure surveys.
Cite
@article{arxiv.astro-ph/0402583,
title = {A new search for features in the primordial power spectrum},
author = {Domenico Tocchini-Valentini and Marian Douspis and Joseph Silk},
journal= {arXiv preprint arXiv:astro-ph/0402583},
year = {2009}
}
Comments
revised version, conclusions unchanged, 7 figures, accepted for publication in MNRAS