Abstract
Using 137,562 quasars in the redshift range from the data release 11 (DR11) of the baryon oscillation spectroscopic survey (BOSS) of Sloan Digital Sky Survey (SDSS)-III, the BOSS-SDSS collaboration estimated the expansion rate of the Universe, and reported that this value is in tension with the predictions of flat model at around a level. In this paper, we briefly describe some attempts made in the literature to relieve the tension, and show that the tension can naturally be alleviated in a nonflat model with positive curvature. We also perform the observational consistency check by considering the constraints on the nonflat model from Planck, WP and BAO data. We find that the nonflat model constrained with data fits better to the line of sight measurement , but only at the expense of still having a poor fit to the BAO transverse measurements.
- Received 11 August 2015
DOI:https://doi.org/10.1103/PhysRevD.92.103512
© 2015 American Physical Society