2006/10/08 by Duane A. Dicus, Dicus, Duane A., Wayne W. Repko +1
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0610232
7 pages, 6 figures. Analysis extended to include the most recent supernova data set
arxiv created 2007/02/04 · arxiv updated 2009/12/01
We utilize the recently released supernova data of Riess \it et al. on the acceleration of the universe to determine how the parameters of a particular modification of gravity, the DGP 5-dimensional theory, are changed when compared to determinations using earlier data sets. We show the parameters of the theory are now very tightly constrained and at very reasonable values. For example, the curvature parameter, Ωk, in contrast to an earlier analysis which used a smaller data set, is now consistent with zero, and the redshift at which the universe starts to accelerate is near unity.