Possible interpretations of the magnitude-redshift relation for supernovae of type Ia

Banerjee, S. K. ; Narlikar, J. V. ; Wickramasinghe, N. C. ; Hoyle, F. ; Burbidge, G. (2000) Possible interpretations of the magnitude-redshift relation for supernovae of type Ia The Astrophysical Journal, 119 (6). pp. 2583-2588. ISSN 0004-637X

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Official URL: http://iopscience.iop.org/1538-3881/119/6/2583

Related URL: http://dx.doi.org/10.1086/301369

Abstract

It has been shown by Riess et al. and Perlmutter et al. that the observed redshift-magnitude relation for supernovae of type Ia, which suggests that the deceleration parameter q0 is negative, can be explained in a Friedmann model with a positive cosmological constant. We show that a quasi-steady state cosmology (QSSC) model can also fit the supernova data. Since most of the emphasis and publicity have been concentrated on explanations involving the Friedmann model, we show how a good fit can be obtained to the observations in the framework of the QSSC. Using this model, we show that absorption due to intergalactic dust may play an important role. This may explain why a few of the supernovae observed show large deviations from the curve determined by the majority of the data.

Item Type:Article
Source:Copyright of this article belongs to American Astronomical Society.
Keywords:Cosmology: Observations; Cosmology: Theory; Dust; Extinction; Supernovae: General
ID Code:41279
Deposited On:27 May 2011 11:28
Last Modified:17 May 2016 23:04

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