2001/11/06 by Moncy V. John, J. V. Narlikar · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #Gamma-ray bursts and supernovae #Radio Astronomy Observations and Technology #astro-ph
paper · pdf · doi:10.1103/physrevd.65.043506
published as Phys.Rev. D65 (2002) 043506 · Accepted for publication in Physical Review D
arxiv created 2001/11/06 · openalex publication_date 2002/01/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Using the Bayesian theory of model comparison, a new cosmological model due to John and Joseph [M. V. John and K. Babu Joseph, Phys. Rev. D 61, 087304 (2000)] is compared with the standard \ensuremathΩ_\ensuremathΛ\ensuremath≠0 cosmological model. Their analysis based on the recent apparent magnitude-redshift data of type Ia supernovas found evidence against the new model; our more careful analysis finds instead that this evidence is not strong. On the other hand, we find that the angular size-redshift data from compact (milliarcsecond) radio sources do not discriminate between the two models. Our analysis serves as an example of how to compare the relative merits of cosmological models in general, using the Bayesian approach.