Cosmological constraints from baryon acoustic oscillations and clustering of large-scale structure

Abstract

We constrain cosmological parameters using combined measurements of the baryon acoustic oscillation (BAO) feature in the correlation function of galaxies and Lyα absorbers that together cover 0.1 < -1, this freedom introduces tension with the LSS σ8 constraint from the growth rate of matter fluctuations. The combined constraint on w from CMB, BAO and LSS clustering for a flat wCDM model is w =-1.03 ± 0.06. © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.