A comparison of the R_h=ct and LCDM cosmologies using the Cosmic Distance Duality Relation

Abstract

The cosmic distance duality (CDD) relation (based on the Etherington reciprocity theorem) plays a crucial role in a wide assortment of cosmological measurements. Attempts at confirming it observationally have met with mixed results, though the general consensus appears to be that the data do support its existence in nature. A common limitation with past approaches has been their reliance on a specific cosmological model, or on measurements of the luminosity distance to Type Ia SNe, which introduces a dependence on the presumed cosmology in spite of beliefs to the contrary. Confirming that the CDD is actually realized in nature is crucial because its violation would require exotic new physics. In this paper, we study the CDD using the observed angular size of compact quasar cores and a Gaussian Process reconstruction of the HII galaxy Hubble diagram---without pre-assuming any particular background cosmology. In so doing, we confirm at a very high level of confidence that the angular-diameter and luminosity distances do indeed satisfy the CDD. We then demonstrate the potential power of this result by utilizing it in a comparative test of two competing cosmological models---the R_h=ct universe and LCDM---and show that R_h=ct is favoured by the CDD data with a likelihood ~82.3% compared with ~17.7% for the standard model.

9 pages, 4 figures, 2 table. Accepted for publication in MNRAS

References in corpus (26)

• Spectra and Light Curves of Six Type Ia Supernovae at 0.511 < z < 1.12 and the Union2 Compilation
• Testing the Distance-Duality Relation with Galaxy Clusters and Type Ia Supernovae
• Cosmological-model-independent tests for the distance-duality relation from Galaxy Clusters and Type Ia Supernova
• The $L-\sigma$ relation for massive bursts of star formation
• Constraints on Distance Duality Relation from Sunyaev Zel'dovich Effect and Chandra X-ray measurements
• Constraining the Dark Energy Equation of State with HII Galaxies
• Supernova Brightening from Chameleon-Photon Mixing
• The HII Galaxy Hubble Diagram Strongly Favors $R_{\mathrm{h}}=ct$ over $\Lambda$CDM
• Evidence of a truncated spectrum in the angular correlation function of the cosmic microwave background
• Reconstruction of the HII Galaxy Hubble Diagram using Gaussian Processes
• Legacy data and cosmological constraints from the angular-size/redshift relation for ultra-compact radio sources
• Clustering, Angular Size and Dark Energy
• A Comparison of Cosmological Models Using Time Delay Lenses
• Testing the Distance-Duality Relation in the $R_h=ct$ Universe
• Model Selection with Strong-lensing Systems
• A Solution to the electroweak horizon problem in the R_h=ct universe
• Testing Cosmological Models with Type Ic Super Luminous Supernovae
• The Maximum Angular-Diameter Distance in Cosmology
• The Age-Redshift Relationship of Old Passive Galaxies
• Cosmological Tests with the FSRQ Gamma-ray Luminosity Function
• Cosmological Tests With Strong Gravitational Lenses using Gaussian Processes
• A Two-point Diagnostic for the HII Galaxy Hubble Diagram
• Is there a standard measuring rod in the Universe?
• A Cosmological Solution to the Impossibly Early Galaxy Problem
• J1342+0928 Supports the Timeline in the R_h=ct Cosmology
• Model Selection based on the Angular-Diameter Distance to the Compact Structure in Radio Quasars

Cited by in corpus (32)

• Reconstructing Functions and Estimating Parameters with Artificial Neural Networks: A Test with the Hubble Parameter and SNe Ia
• The evidence of cosmic acceleration and observational constraints
• The Cosmic Timeline Implied by the JWST High-redshift Galaxies
• Cosmological test using the Hubble diagram of high-z quasars
• Testing the violation of the equivalence principle in the electromagnetic sector and its consequences in $f(T)$ gravity
• Using spatial curvature with HII galaxies and cosmic chronometers to explore the tension in $H_0$
• A Distance-Deviation Consistency and Model-Independent Method to Test the Cosmic Distance-Duality Relation
• Unbiased Cosmic Opacity Constraints from Standard Sirens and Candles
• Thermodynamics of the R_h=ct Universe: A Simplification of Cosmic Entropy
• Classicalization of Quantum Fluctuations at the Planck Scale in the R_h=ct Universe
• Quantum Fluctuations at the Planck Scale
• A Resolution of the Monopole Problem in the R_h=ct Universe
• A comparison of the R_h=ct and LCDM cosmologies based on the observed halo mass function
• Model Selection with Baryonic Acoustic Oscillations in the Lyman-alpha Forest
• The Origin of Rest-mass Energy
• A resolution of the Trans-Planckian problem in the R_h=ct universe
• What if the universe expands linearly? A local general relativity to solve the "zero active mass" problem
• Model-Independent Probe of Cosmic Distance Duality Relation
• Model Selection using Baryon Acoustic Oscillations in the Final SDSS-IV Release
• Universal expansion with spatially varying $G$
• A Pop III generated dust screen at z~16
• A comparison of cosmological models with high-redshift quasars
• Exploring the possible evolution of the mass density power-law index of strong gravitational lenses with a model-independent method
• Assessing Cosmic Acceleration with the Alcock-Paczynski Effect in the SDSS-IV Quasar Catalog
• The Anomalous 21-cm Absorption at High Redshifts
• Tensor Fluctuations in the Early Universe
• A Comparative Test of the LCDM and R_h=ct Cosmologies Based on Upcoming Redshift Drift Measurements
• Model-independent measurement of the Hubble Constant and the absolute magnitude of Type Ia Supernovae
• Cosmological test using the high-redshift detection rate of FSRQs with the Square Kilometer Array
• When can we compute analytically lookback time, age of the universe, and luminosity distance?
• Model selection using time-delay lenses
• Is there a Cosmological Basis for E = mc^2?