Baryon acoustic oscillation, Hubble parameter, and angular size measurement constraints on the Hubble constant, dark energy dynamics, and spatial curvature
Cosmology and Nongalactic Astrophysics2019-09-10v2General Relativity and Quantum CosmologyHigh Energy Physics - PhenomenologyHigh Energy Physics - Theory
In this paper we use all available baryon acoustic oscillation, Hubble parameter, and quasar angular size data to constrain six dark energy cosmological models, both spatially flat and non-flat. Depending on the model and data combination considered, these data mildly favor closed spatial hypersurfaces (by as much as 1.7σ) and dark energy dynamics (up to a little over 2σ) over a cosmological constant Λ. The data also favor, at 1.8σ to 3.4σ, depending on the model and data combination, a lower Hubble constant than what is measured from the local expansion rate.
@article{arxiv.1902.03196,
title = {Baryon acoustic oscillation, Hubble parameter, and angular size measurement constraints on the Hubble constant, dark energy dynamics, and spatial curvature},
author = {Joseph Ryan and Yun Chen and Bharat Ratra},
journal= {arXiv preprint arXiv:1902.03196},
year = {2019}
}
Comments
13 pages, 6 figures. This version has been updated to reflect referee comments, and to correct a mistake that was present in an earlier version (results largely unchanged). Accepted for publication in MNRAS