Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 471, Issue 2, Pages 2370-2390Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stx1641
Keywords
cosmological parameters; distance scale; large-scale structure of Universe; cosmology: observations
Categories
Funding
- Spanish MICINN's Consolider-Ingenio Programme under grant MultiDark [CSD2009-00064, AYA2010-21231-C02-01]
- Comunidad de Madrid [HEPHACOS S2009/ESP-1473]
- MINECO [AYA2012-39702- C02-01]
- National Research Foundation of Korea (NRF) - Korean Ministry of Education, Science and Technology (MoEST) [NRF-SGER 2014055950]
- faculty research fund of Sejong University
- Programa de Apoyo a Proyectos de Investigacion e Innovacion Tecnologica (PAPITT) [IA102516]
- Proyecto Conacyt Fronteras [281]
- Alfred P. Sloan Foundation
- National Science Foundation
- U.S. Department of Energy Office of Science
- University of Arizona
- Brazilian Participation Group
- Brookhaven National Laboratory
- Carnegie Mellon University
- University of Florida
- French Participation Group
- German Participation Group
- Harvard University
- Instituto de Astrofisica de Canarias
- Michigan State/Notre Dame/JINA Participation Group
- Johns Hopkins University
- Lawrence Berkeley National Laboratory
- Max Planck Institute for Astrophysics
- Max Planck Institute for Extraterrestrial Physics
- New Mexico State University
- New York University
- Ohio State University
- Pennsylvania State University
- University of Portsmouth
- Princeton University
- Spanish Participation Group
- University of Tokyo
- University of Utah
- Vanderbilt University
- University of Virginia
- University of Washington
- Yale University
- [LANCAD-UNAM-DGTIC-319]
- STFC [ST/K004719/1, ST/N000668/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/N000668/1] Funding Source: researchfish
- UK Space Agency [ST/N00180X/1] Funding Source: researchfish
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We analyse the broad-range shape of the monopole and quadrupole correlation functions of the Baryon Oscillation Spectroscopic Survey Data Release 12 (DR12) CMASS and LOWZ galaxy sample to obtain constraints on the Hubble expansion rate H(z), the angular-diameter distance D-A(z), the normalized growth rate f(z) sigma(8)(z) and the physical matter density Omega(m) h(2). We adopt wide and flat priors on all model parameters in order to ensure the results are those of a ` single-probe' galaxy clustering analysis. We also marginalize over three nuisance terms that account for potential observational systematics affecting the measured monopole. However, such Monte Carlo Markov Chain analysis is computationally expensive for advanced theoretical models. We develop a new methodology to speed up the analysis. Using the range 40 h(-1) Mpc < s < 180 h(-1) Mpc, we obtain {DA(z) r(s,fid)/ r(s) (Mpc), H(z) r(s)/r(s),(fid) km s(-1) Mpc(-1), f(z)sigma 8(z)Omega(m)h(2)} = {956 +/- 28, 75.0 +/- 4.0, 0.397 +/- 0.073, 0.143 +/- 0.017} at z = 0.32 and {1421 +/- 23, 96.7 +/- 2.7, 0.497 +/- 0.058, 0.137 +/- 0.015} at z = 0.59 where r(s) is the comoving sound horizon at the drag epoch and r(s,fid) = 147.66 Mpc for the fiducial cosmology used in this study. Combining our measurements with Planck data, we obtain Omega(m) = 0.306 +/- 0.009, H-0 = 67.9 +/- 0.7 kms(-1) Mpc(-1) and sigma(8) = 0.815 +/- 0.009 assuming Lambda cold dark matter (CDM); Omega(k) = 0.000 +/- 0.003 and w= -1.02 +/- 0.08 assuming owCDM. Our results show no tension with the flat Lambda CDM cosmological paradigm. This paper is part of a set that analyses the final galaxy clustering data set from Baryon Oscillation Spectroscopic Survey.
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