### Abstract

We use three different data sets, specifically H(z) measurements from cosmic chronometers, the HII-galaxy Hubble diagram, and reconstructed quasar-core angular-size measurements, to perform a joint analysis of three flat cosmological models: the R_{h}=ct Universe, ΛCDM, and wCDM. For R_{h}=ct, the 1σ best-fit value of the Hubble constant H_{0} is 62.336±1.464km s^{−1}Mpc^{−1}, which matches previous measurements (∼63km s^{−1}Mpc^{−1}) based on best fits to individual data sets. For ΛCDM, our inferred value of the Hubble constant, H_{0}=67.013±2.578km s^{−1}Mpc^{−1}, is more consistent with the Planck optimization than the locally measured value using Cepheid variables, and the matter density Ω_{m}=0.347±0.049 similarly coincides with its Planck value to within 1σ. For wCDM, the optimized parameters are H_{0}=64.718±3.088km s^{−1}Mpc^{−1}, Ω_{m}=0.247±0.108 and w=−0.693±0.276, also consistent with Planck. A direct comparison of these three models using the Bayesian Information Criterion shows that the R_{h}=ct universe is favored by the joint analysis with a likelihood of ∼97% versus ≲3% for the other two cosmologies.

Original language | English (US) |
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Article number | 100405 |

Journal | Physics of the Dark Universe |

Volume | 26 |

DOIs | |

State | Published - Dec 2019 |

### Keywords

- Cosmological observations
- Cosmological parameters
- Cosmological theory
- Dark energy
- Galaxies
- Large-scale structure

### ASJC Scopus subject areas

- Astronomy and Astrophysics
- Space and Planetary Science

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## Cite this

_{h}=ct universe jointly with the redshift-dependent expansion rate and angular-diameter and luminosity distances.

*Physics of the Dark Universe*,

*26*, [100405]. https://doi.org/10.1016/j.dark.2019.100405