How Recent is Cosmic Acceleration?
arXiv:astro-ph/0104022 · doi:10.1142/S0218271803003414
Abstract
Possibly the most peculiar expectation of the standard fine-tuned cosmological paradigm is that cosmic acceleration is to only be a very recent (z<1) phenomenon, with the universe being required to be decelerating at all higher redshifts. Detailed exploration of the Hubble plot out to z=2 or so will not only provide an absolute test of this expectation but will also allow for testing of conformal gravity, a non fine-tuned alternate cosmological theory which provides equally good fitting to the current z<1 Hubble plot data while requiring the universe to be accelerating at higher z instead. With both standard and conformal gravity being found to be compatible with a very recently reported z=1.7 data point, additional data points will thus be needed to determine whether the universe is accelerating or decelerating above z=1.
RevTeX, 12 pages, 3 eps figures. Updated version which shows compatibility of conformal gravity with SN 1997ff at z=1.7
References in corpus (5)
Cited by in corpus (17)
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