Galaxy Cluster Gas Mass Fraction and Hubble Parameter versus Redshift Constraints on Dark Energy

Abstract

Galaxy cluster gas mass fraction versus redshift data and Hubble parameter versus redshift data are used to jointly constrain dark energy models. These constraints favor the Einstein cosmological constant limit of dark energy but do not strongly rule out slowly-evolving dark energy.

11 pages, 3 figures

References in corpus (5)

• Is Modified Gravity Required by Observations? An Empirical Consistency Test of Dark Energy Models
• The Weak Energy Condition and the Expansion History of the Universe
• Interacting Energy Components and Observational $H(z)$ Data
• Dark energy generated from a (super)string effective action with higher order curvature corrections and a dynamical dilaton
• Natural Phantom Dark Energy, Wiggling Hubble Parameter $H(z)$ and Direct $H(z)$ Data