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Model-independent test for the cosmic distance duality relation with Pantheon and eBOSS DR16 quasar sample

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arxiv 2212.00269 v1 pith:UK6FGCEF submitted 2022-12-01 astro-ph.CO gr-qc

Bing Xu , Zhenzhen Wang , Kaituo Zhang , Qihong Huang , Jianjian Zhang This is my paper · ORCID
classification astro-ph.COgr-qc
keywords cddrsampledatapantheonsniatestbaryoncompressed
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abstract

In this paper, we carry out a new model-independent cosmological test for the cosmic distance duality relation~(CDDR) by combining the latest five baryon acoustic oscillations (BAO) measurements and the Pantheon type Ia supernova (SNIa) sample. Particularly, the BAO measurement from extended Baryon Oscillation Spectroscopic Survey~(eBOSS) data release~(DR) 16 quasar sample at effective redshift $z=1.48$ is used, and two methods, i.e. a compressed form of Pantheon sample and the Artificial Neural Network~(ANN) combined with the binning SNIa method, are applied to overcome the redshift-matching problem. Our results suggest that the CDDR is compatible with the observations, and the high-redshift BAO and SNIa data can effectively strengthen the constraints on the violation parameters of CDDR with the confidence interval decreasing by more than 20 percent. In addition, we find that the compressed form of observational data can provide a more rigorous constraint on the CDDR, and thus can be generalized to the applications of other actual observational data with limited sample size in the test for CDDR.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The cosmic tetrarchy: four estimators breaking the assumption degeneracy in cosmological distance tensions

    astro-ph.CO 2026-06 unverdicted novelty 6.0 of 10

    The cosmic tetrarchy decomposes BAO-based measurements into four channels that isolate distinct assumptions to test whether the dimensionless sound-horizon ratio remains a single redshift-independent number.

  2. Growth, geometry, and early-universe split of the matter density parameter $\Omega_{\rm m}$

    astro-ph.CO 2026-07 conditional novelty 5.5 of 10

    Splitting Ω_m into geometry, growth, and early-universe regimes yields mutually compatible values, yet ΔΩ_m^{geo,early} is 2σ from zero under combined DES, Planck (scale-cut), DESI, Pantheon+, and RSD data.

  3. Investigating the cosmic distance duality relation with gamma-ray bursts

    astro-ph.CO 2025-09 reject novelty 5.0 of 10

    Combined gamma-ray burst and multi-probe data show no significant violation of the cosmic distance duality relation and prefer a Planck-like Hubble constant.

  4. Testing the cosmic distance duality relation using Type Ia supernovae and BAO observations

    astro-ph.CO 2025-02 conditional novelty 5.0 of 10

    BAO and supernova data are consistent with the cosmic distance duality relation, and a new marginalization over the absolute magnitude and sound horizon scale makes the test independent of those nuisance parameters.

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