Model Selection Using Cosmic Chronometers with Gaussian Processes

Abstract

The use of Gaussian Processes with a measurement of the cosmic expansion rate based solely on the observation of cosmic chronometers provides a completely cosmology-independent reconstruction of the Hubble constant H(z) suitable for testing different models. The corresponding dispersion sigma_H is smaller than ~9% over the entire redshift range (0 < z < 2) of the observations, rivaling many kinds of cosmological measurements available today. We use the reconstructed H(z) function to test six different cosmologies, and show that it favours the R_h=ct universe, which has only one free parameter (i.e., H_0) over other models, including Planck LCDM. The parameters of the standard model may be re-optimized to improve the fits to the reconstructed H(z) function, but the results have smaller p-values than one finds with R_h=ct.

arXiv comment20 pages, 24 figures, 3 tables. Matches final published version in JCAP

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Cited by in corpus (34)

• $H_0$ from cosmic chronometers and Type Ia supernovae, with Gaussian Processes and the novel Weighted Polynomial Regression method
• An improved model-independent assessment of the late-time cosmic expansion
• Model-independent reconstruction of $f(T)$ gravity from Gaussian Processes
• Quantifying the $S_8$ tension with the Redshift Space Distortion data set
• Gaussian Process Estimation of Transition Redshift
• The evidence of cosmic acceleration and observational constraints
• Model-independent reconstruction of the linear anisotropic stress $\eta$
• Constraints on interacting dark energy models through cosmic chronometers and Gaussian process
• Model-independent Curvature Determination from Gravitational-Wave Standard Sirens and Cosmic Chronometers
• Revealing the late-time transition of $H_0$: relieve the Hubble crisis
• Swampland criteria for a dark-energy dominated universe, ensuing from Gaussian process and H(z) data analysis
• Model Comparison of $\Lambda$CDM vs $R_h=ct$ using Cosmic Chronometers
• Revisiting the cosmic distance duality relation with machine learning reconstruction methods: the combination of HII galaxies and ultra-compact radio quasars
• Impact of young stellar components on quiescent galaxies: deconstructing cosmic chronometers
• Implications from simulated strong gravitational lensing systems: constraining cosmological parameters using Gaussian Processes
• Likelihood-free Cosmological Constraints with Artificial Neural Networks: An Application on Hubble Parameters and SNe Ia
• Gaussian Process Approach for Model-Independent Reconstruction of $f(Q)$ Gravity with Direct Hubble Measurements
• Does $\Lambda$CDM really be in tension with the Hubble diagram data?
• On the use of galaxies as clocks and the universal expansion
• A framework for the next generation of stationary cosmological models
• Constraining f(R) models with cosmic chronometers and the HII galaxy Hubble diagram
• The Maximum Angular-Diameter Distance in Cosmology
• Using newest VLT-KMOS HII Galaxies and other cosmic tracers to test the $\Lambda$CDM tension
• Cosmological Tests With Strong Gravitational Lenses using Gaussian Processes
• Null tests with Gaussian Process
• Testing the $R_{\mathrm{h}}=ct$ Universe Jointly with the Redshift-dependent Expansion rate and Angular-diameter and Luminosity Distances
• Potentialities of Hubble parameter and expansion rate function data to alleviate Hubble tension
• A model-independent test of the evolution of gas depletion factor for SPT-SZ and Planck ESZ clusters
• Model Selection based on the Angular-Diameter Distance to the Compact Structure in Radio Quasars
• PoPE: A population-based approach to model spatial structure of astronomical systems
• Determining $H_0$ from distance sum rule combining gamma-ray bursts with observational Hubble data and strong gravitational lensing
• Comparison of $\Lambda$CDM and $R_h=ct$ with updated galaxy cluster $f_{gas}$ measurements using Bayesian inference
• Cosmic acceleration and the Hubble tension from baryon acoustic oscillation data
• Cosmological test using the high-redshift detection rate of FSRQs with the Square Kilometer Array