Preprint typeset using L ATEX style emulateapj v. 10/09/06 GRAVITATIONAL ENERGY AS DARK ENERGY: CONCORDANCE OF COSMOLOGICAL TESTS
Ben M. Leith, S. C. Cindy Ng, David L. Wiltshire · 2008
We provide quantitative evidence that a new solution to averaging the observed inhomogeneous structure of matter in the universe (Wiltshire 2007a,b), leads to an observationally viable cosmology without exotic dark energy. We find concordance parameters which simultaneously satisfy three independent tests: the match to the angular scale of the sound horizon detected in the cosmic microwave background anisotropy spectrum; the effective comoving baryon acoustic oscillation scale detected in galaxy clustering statistics; and type Ia supernova luminosity distances. Independently of the supernova data, concordance is obtained for a value of the Hubble constant which agrees with the measurement of the Hubble Key team of Sandage et al. (2006). Combining all three tests, best–fit parameters include a global average Hubble constant H0 = 61.7 +1.4 −1.3 km sec−1 Mpc −1, a present epoch void volume fraction of fv0 = 0.76 ± 0.05, and an age of the universe of 14.7 +0.6 −0.5 billion years as measured by observers in galaxies. The mass ratio of non–baryonic dark matter to baryonic matter is