2016/07/31 by Gong-Bo Zhao, Yuting Wang, Shun Saito +25 · 3 citations
Physics and Astronomy · #astro-ph.CO
paper · pdf · doi:10.1093/mnras/stw3199
published as MNRAS (2016) 466 (1): 762-779 · 20 pages, 22 figures; version accepted by MNRAS; This paper is part of a set that analyses the final galaxy clustering dataset from BOSS; The BAO measurements including the full covariance matrices presented in this work and a CosmoMC patch to use this measurement for cosmology is available at https://sdss3.org//science/boss_publications.php
arxiv created 2016/12/06 · arxiv updated 2017/02/13
We perform a tomographic baryon acoustic oscillations (BAO) analysis using the monopole, quadrupole and hexadecapole of the redshift-space galaxy power spectrum measured from the pre-reconstructed combined galaxy sample of the completed Sloan Digital Sky Survey (SDSS-III) Baryon Oscillation Spectroscopic Survey (BOSS) Data Release (DR)12 covering the redshift range of 0.20<z<0.75. By allowing for overlap between neighbouring redshift slices, we successfully obtained the isotropic and anisotropic BAO distance measurements within nine redshift slices to a precision of 1.5%-3.4% for DV/rd, 1.8% -4.2% for DA/rd and 3.7% - 7.5% for H rd, depending on effective redshifts. We provide our BAO measurement of DA/rd and H rd with the full covariance matrix, which can be used for cosmological implications. Our measurements are consistent with those presented in \citetAcacia, in which the BAO distances are measured at three effective redshifts. We constrain dark energy parameters using our measurements, and find an improvement of the Figure-of-Merit of dark energy in general due to the temporal BAO information resolved. This paper is part of a set that analyses the final galaxy clustering dataset from BOSS.