Research Papers (JVN)

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Critique of supernova data analysis in cosmology
(IOP Publishing, 2010-10-20) Vishwakarma, R. G.; Narlikar, J. V.
Observational astronomy has shown significant growth over the last decade and has made important contributions to cosmology. A major paradigm shift in cos-mology was brought about by observations of Type Ia supernovae. The notion that the universe is accelerating has led to several theoretical challenges. Unfortunately, although high-quality supernovae data-sets are being produced, their statistical anal-ysis leaves much to be desired. Instead of using the data to directly test the model, several studies seem to concentrate on assuming the model to be correct and limiting themselves to estimating model parameters and internal errors. As shown here, the important purpose of testing a cosmological theory is thereby vitiated.
Time dilation in the supernova light curve and the variable mass hypothesis
(American Astronomical Society, 1997-06-20) Narlikar, J. V.; Arp, H. C.
The recently reported time dilation effect in Type Ia supernova SN 1995K has been claimed to rule out the static universe model of Narlikar & Arp. It is shown here that the variable mass hypothesis which accounts for the redshift phenomenon in the above static universe model does indeed predict the observed effect and that there is no conflict between the data of Leibundgut et al. and the predictions of this model.