Hubble parameter data constraints on dark energy

Chen, Yun; Ratra, Bharat

doi:10.1016/j.physletb.2011.08.035

Cited by 67 publications

(74 citation statements)

References 88 publications

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“…H(z) data have previously been used to constrain other cosmological parameters (see, e.g., Samushia & Ratra 2006;Chen & Ratra 2011b;Farooq et al , 2015Capozziello et al 2014;Chen et al 2015;Meng et al 2015;Alam et al 2016;Guo & Zhang 2016;Mukherjee 2016;Solà et al 2016), including measuring the redshift of the cosmological deceleration-acceleration transition between the earlier nonrelativistic matter-dominated epoch and the current dark-energy-dominated epoch (see, e.g., Moresco et al 2016). See Verde et al (2014) for an early attempt at measuring H 0 from H(z) data.…”

Section: Introductionmentioning

confidence: 99%

Determining the Hubble Constant From Hubble Parameter Measurements

Chen

Kumar

Ratra

2017

ApJ

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140

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ABSTRACT1 Mpc −1 (1σ errors) in the ΛCDM (spatially flat and non-flat), ωCDM, and fCDM models, respectively. These measured H 0 values are more consistent with the lower values determined from recent data on the cosmic microwave background and baryon acoustic oscillations, as well as with the value found from a median statistical analysis of Huchra's compilation of H 0 measurements, but include the higher local measurements of H 0 within the 2σ confidence limits.

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Section: Introductionmentioning

confidence: 99%

Determining the Hubble Constant From Hubble Parameter Measurements

Chen

Kumar

Ratra

2017

ApJ

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140

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“…When α=0 the fCDM model is reduced to the corresponding ΛCDM scenario. The fCDM model with this kind of V(f) has been extensively investigated, mostly in the spatially flat case (Podariu & Ratra 2000;Chae et al 2004;Samushia et al 2007;Samushia & Ratra 2010;Chen & Ratra 2011a, 2011bFarooq & Ratra 2013;Farooq et al 2013aFarooq et al , 2013bAvsajanishvili et al 2014;Pavlov et al 2014;Chen et al 2015;Lima et al 2015), and only limited attention has been paid to the non-flat scenario (Pavlov et al 2013;Farooq et al 2015;Gosenca & Coles 2015). However, the above-mentioned literature on the fCDM model did not consider massive neutrinos.…”

Section: Introductionmentioning

confidence: 99%

Constraints on Non-Flat Cosmologies With Massive Neutrinos After Planck 2015

Chen

Ratra

Biesiada

et al. 2016

ApJ

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We investigate two dark energy cosmological models (i.e., the ΛCDM and fCDM models) with massive neutrinos assuming two different neutrino mass hierarchies in both the spatially flat and non-flat scenarios, where in the fCDM model the scalar field possesses an inverse power-law potential, V(f)∝f − α (α>0). Cosmic microwave background data from Planck2015, baryon acoustic oscillation data from 6dFGS, SDSS-MGS, BOSS-LOWZ and BOSS CMASS-DR11, the joint light-curve analysis compilation of SNe Ia apparent magnitude observations, and the Hubble Space Telescope H 0 prior, are jointly employed to constrain the model parameters. We first determine constraints assuming three species of degenerate massive neutrinos. In the spatially flat (non-flat) ΛCDM model, the sum of neutrino masses is bounded as Σm ν <0.165(0.299) eV at 95% confidence level (CL). Correspondingly, in the flat (non-flat) fCDM model, we find Σm ν <0.164(0.301) eV at 95% CL. The inclusion of spatial curvature as a free parameter results in a significant broadening of confidence regions for Σm ν and other parameters. In the scenario where the total neutrino mass is dominated by the heaviest neutrino mass eigenstate, we obtain similar conclusions to those obtained in the degenerate neutrino mass scenario. In addition, the results show that the bounds on Σm ν based on two different neutrino mass hierarchies have insignificant differences in the spatially flat case for both the ΛCDM and fCDM models; however, the corresponding differences are larger in the nonflat case.

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“…1, and [12]. The median statistics approach differs substantially from the nuclear or particle data evaluation procedures.…”

Section: Resultsmentioning

confidence: 99%

A nuclear data approach for the Hubble constant measurements

Pritychenko

2015

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Abstract. An extraordinary number of Hubble constant measurements challenges physicists with selection of the best numerical value. The standard U.S. Nuclear Data Program (USNDP) codes and procedures have been applied to resolve this issue. The nuclear data approach has produced the most probable or recommended Hubble constant value of 67.2(69) (km/sec)/Mpc. This recommended value is based on the last 20 years of experimental research and includes contributions from different types of measurements. The present result implies (14.55 ± 1.51) × 10 9 years as a rough estimate for the age of the Universe. The complete list of recommended results is given and possible implications are discussed.

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Hubble parameter data constraints on dark energy

Cited by 67 publications

References 88 publications

Determining the Hubble Constant From Hubble Parameter Measurements

Determining the Hubble Constant From Hubble Parameter Measurements

Constraints on Non-Flat Cosmologies With Massive Neutrinos After Planck 2015

A nuclear data approach for the Hubble constant measurements

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