CMB Cosmological Parameter Estimation: Methods and Current Results
天体物理学
2007-05-23 v1
摘要
The majority of present efforts to constrain cosmological parameters with cosmic microwave background (CMB) anisotropy data employ approximate likelihood functions, the time consuming nature of a complete analysis being a major obstacle. We have performed a full (unapproximated) likelihood analysis on several experiments that allows us to examine the various assumptions made in these approximate methods and to evaluate their performance. Our results indicate that care should be taken when using such approaches. With an improved approximate method, we present some constraints on cosmological parameters using the entire present CMB data set.
引用
@article{arxiv.astro-ph/0004283,
title = {CMB Cosmological Parameter Estimation: Methods and Current Results},
author = {M. Douspis and J. G. Bartlett and A. Blanchard and M. Le Dour},
journal= {arXiv preprint arXiv:astro-ph/0004283},
year = {2007}
}
备注
Moriond Proceedings: Energy Densities in the Universe (Jan. 2000)