HUBBLE PARAMETER MEASUREMENT CONSTRAINTS ON THE COSMOLOGICAL DECELERATION–ACCELERATION TRANSITION REDSHIFT

By Omer Farooq, Bharat Ratra. 2013

300 citations recorded by the source corpus.

We compile a list of 28 independent measurements of the Hubble parameter between redshifts 0.07 ⩽ z ⩽ 2.3 and use this to place constraints on model parameters of constant and time-evolving dark energy cosmologies. These H(z) measurements by themselves require a currently accelerating cosmological expansion at about, or better than, 3σ confidence. The mean and standard deviation of the six best-fit model deceleration–acceleration transition redshifts (for the three cosmological models and two Hubble constant priors we consider) are zda = 0.74 ± 0.05, in good agreement with the recent Busca et al. determination of zda = 0.82 ± 0.08 based on 11 H(z) measurements between redshifts 0.2 ⩽ z ⩽ 2.3, almost entirely from baryon-acoustic-oscillation-like data.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/527996669eaa4ccbadbe8c28bf9549a51036c1d1

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. A. Gómez-Valent
2. Javier de Cruz Pérez
3. Hai-Bo Yu
4. Fa-yin Wang
5. Sara Crandall
6. Foram Madiyar
7. J. Solà
8. Bharat Ratra

In Instrumentation

1. Sara Crandall
2. Foram Madiyar
3. Bharat Ratra
4. Omer Farooq
5. A. Gómez-Valent
6. J. Solà
7. Javier de Cruz Pérez
8. Fa-yin Wang

Citations in the corpus

• HUBBLE PARAMETER MEASUREMENT CONSTRAINTS ON THE REDSHIFT OF THE DECELERATION–ACCELERATION TRANSITION, DYNAMICAL DARK ENERGY, AND SPACE CURVATURE (2016, methodology): “Table 1 here is based on Table 1 of Farooq & Ratra (2013b) with the following modifications.”
• Hubble Parameter and Baryon Acoustic Oscillation Measurement Constraints on the Hubble Constant, the Deviation from the Spatially Flat ΛCDM Model, the Deceleration–Acceleration Transition Redshift, and Spatial Curvature (2017, background): “Farooq & Ratra (2013) used H(z) data to study this transition and measure the redshift of the transition, zda, in a variety of cosmological models.”
• First Evidence of Running Cosmic Vacuum: Challenging the Concordance Model (2016, background): “See also Farooq & Ratra (2013), Sahni, Shafieloo & Starobinsky (2014), Ding et al. (2015), Zheng et al. (2016) and Chen, Kumar & Ratra (2016), where the authors make only use of Hubble parameter data in their analyses.”