A Pantheon(N=1,701) Observational Test of Cosmological Special and General RelativityCSTR/CGR):Full-Covariance MCMC Analysis, a Redshift-Cut Test of the Anisotropy Signal, and Model Selection Against Lambda CDM

Q: What does this research mean for the field?

The Cosmological Special and General Relativity (CSTR/CGR) model can be observationally tested and compared against the standard Lambda CDM model using the full covariance matrix of the Pantheon+SH0ES Compilation of 1,701 Type Ia supernovae. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

Sangwha Yi

doi:10.5281/zenodo.22308606

September 4, 2026Open Access

A Pantheon(N=1,701) Observational Test of Cosmological Special and General RelativityCSTR/CGR):Full-Covariance MCMC Analysis, a Redshift-Cut Test of the Anisotropy Signal, and Model Selection Against Lambda CDM

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Key Points

To test cosmological special and general relativity models and assess cosmic anisotropy against the standard Lambda-CDM cosmological model.
Confronted cosmological relativity models with the Pantheon+SH0ES compilation comprising N=1,701 Type Ia supernovae.
Performed parameter fitting using Markov Chain Monte Carlo (MCMC) algorithms incorporating the complete 1,701×1,701 covariance matrix.
Conducted redshift-cut analyses to test for cosmic anisotropy signals and carried out comparative model selection against Lambda-CDM.
Obtained observational constraints on cosmological special and general relativity parameters using full-covariance likelihood estimation across 1,701 supernovae.
Assessed the statistical viability of cosmic anisotropy signals across designated redshift intervals relative to standard isotropic Lambda-CDM predictions.

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Implication

Observational study evaluates cosmological relativity models against Lambda CDM using 1,701 supernovae, highlighting empirical constraints on cosmic expansion.

Abstract

We confront this model with the real Pantheon+SH0ES Compilation(N=1,701 Type Ia supernovae), using the full 1,701×1,701 covariance matrix in a Markov Chain Monte Carlo(MCMC) fit.

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Sangwha Yi (2026) studied this question.

synapsesocial.com/papers/6a9d1ea728139818eab21ab6 https://doi.org/10.5281/zenodo.22308606

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A Pantheon(N=1,701) Observational Test of Cosmological Special and General RelativityCSTR/CGR):Full-Covariance MCMC Analysis, a Redshift-Cut Test of the Anisotropy Signal, and Model Selection Against Lambda CDM

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A Pantheon(N=1,701) Observational Test of Cosmological Special and General RelativityCSTR/CGR):Full-Covariance MCMC Analysis, a Redshift-Cut Test of the Anisotropy Signal, and Model Selection Against Lambda CDM

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