Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aj....119.2583b&link_type=abstract
The Astronomical Journal, Volume 119, Issue 6, pp. 2583-2588.
Astronomy and Astrophysics
Astronomy
13
Cosmology: Observations, Cosmology: Theory, Ism: Dust, Extinction, Stars: Supernovae: General
Scientific paper
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.
Banerjee Sanjay K.
Burbidge Geoffrey
Hoyle Fiona
Narlikar Jayant V.
Wickramasinghe Chandra N.
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