Comparison of cosmological models using Bayesian theory

John, Moncy V. ; Narlikar, J. V. (2002) Comparison of cosmological models using Bayesian theory Physical Review D - Particles, Fields, Gravitation and Cosmology, 65 (4). 043506_1-043506_7. ISSN 1550-7998

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Official URL: http://prd.aps.org/abstract/PRD/v65/i4/e043506

Related URL: http://dx.doi.org/10.1103/PhysRevD.65.043506

Abstract

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 ΩΛ≠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.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:41285
Deposited On:27 May 2011 11:47
Last Modified:17 May 2016 23:04

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