Real Panthen+SH0ES, DESI BAO and f sigma8 Observational Test of Cosmological Special and General Relativity(CSTR/CGR):MCMC Analysis with Full Covariance and Second-Order (HX/c)^2 Corrections

Sangwha Yi

doi:10.5281/zenodo.22285644

September 3, 2026Open Access

Real Panthen+SH0ES, DESI BAO and f sigma8 Observational Test of Cosmological Special and General Relativity(CSTR/CGR):MCMC Analysis with Full Covariance and Second-Order (HX/c)^2 Corrections

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Key Points

To conduct the first observational test assessing the empirical validity of Cosmological Special Relativity (CSTR) and Cosmological General Relativity (CGR) against modern cosmic expansion and structure datasets.
Analyzed Pantheon+SH0ES Type Ia supernovae, Dark Energy Spectroscopic Instrument (DESI) baryon acoustic oscillations (BAO) across 12 redshift bins, and f*sigma8 growth rate compilations.
Performed Markov Chain Monte Carlo (MCMC) parameter estimation incorporating full covariance matrices and second-order relativistic corrections.
Conducted the initial observational benchmark of CSTR and CGR cosmological models against real cosmic expansion and large-scale structure datasets.
Constrained relativistic model parameter space using combined distance ladders, galaxy clustering scales, and structure growth measurements.

Implication

Observational analysis tests cosmological relativity models against supernova and expansion data, highlighting empirical boundaries for alternative relativistic frameworks.

Abstract

We present the first real Observational test of Cosmological Special Relativity(CSTR) and Cosmological General Relativity(CGR) using Pantheon+SH0ES Type IA supernova, DESI BAO DRI 12 reshift bins and f sigma8 growth compilation.

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Sangwha Yi (2026) studied this question.

synapsesocial.com/papers/6a9bd4346b95aff0620ebaa9 https://doi.org/10.5281/zenodo.22285644

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Real Panthen+SH0ES, DESI BAO and f sigma8 Observational Test of Cosmological Special and General Relativity(CSTR/CGR):MCMC Analysis with Full Covariance and Second-Order (HX/c)^2 Corrections

Key Points

Implication

Abstract

Discussion

Cite This Study

Real Panthen+SH0ES, DESI BAO and f sigma8 Observational Test of Cosmological Special and General Relativity(CSTR/CGR):MCMC Analysis with Full Covariance and Second-Order (HX/c)^2 Corrections

Key Points

Implication

Abstract

Discussion

Cite This Study

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