Constraints on power law cosmology from cosmic chronometer, standard ruler, and standard candle data
Cosmology and Nongalactic Astrophysics
2021-08-25 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
In this paper I investigate how well simple power law expansion fits observational data in comparison to the standard CDM model. I analyze a data set consisting of cosmic chronometer, standard ruler, and standard candle measurements, finding that the CDM model provides a better fit to most combinations of these data than the power law ansatz.
Keywords
Cite
@article{arxiv.2102.08457,
title = {Constraints on power law cosmology from cosmic chronometer, standard ruler, and standard candle data},
author = {Joseph Ryan},
journal= {arXiv preprint arXiv:2102.08457},
year = {2021}
}
Comments
18 pages, 2 figures. The previous version of this paper was rejected by Phys. Rev. D; this version has been accepted for publication in JCAP after some minor editorial changes