Lookback time and Chandra constrains on cosmological parameters
Cosmology and Nongalactic Astrophysics
2011-07-26 v1
Abstract
In this paper we combine the WMAP7 with lookback time and Chandra gas fraction data to constrain the main cosmological parameters and the equation of state for the dark energy. We find that the lookback time is a good measurement that can improve the determination of the equation of state for the dark energy with regard to other external data sets. We conclude that larger lookback time data set will further improve our determination of the cosmological parameters.
Keywords
Cite
@article{arxiv.1107.4867,
title = {Lookback time and Chandra constrains on cosmological parameters},
author = {D. Tonoiu and A. Caramete and L. A. Popa},
journal= {arXiv preprint arXiv:1107.4867},
year = {2011}
}
Comments
10 pages, 2 figures; Romanian Reports in Physics, Volume 63, Number 3, 2011