TY - JOUR
T1 - The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Angular clustering tomography and its cosmological implications
AU - Salazar-Albornoz, Salvador
AU - Sánchez, Ariel G.
AU - Grieb, Jan Niklas
AU - Crocce, Martin
AU - Scoccimarro, Roman
AU - Alam, Shadab
AU - Beutler, Florian
AU - Brownstein, Joel R.
AU - Chuang, Chia Hsun
AU - Kitaura, Francisco Shu
AU - Olmstead, Matthew D.
AU - Percival, Will J.
AU - Prada, Francisco
AU - Rodríguez-Torres, Sergio
AU - Samushia, Lado
AU - Tinker, Jeremy
AU - Thomas, Daniel
AU - Tojeiro, Rita
AU - Wang, Yuting
AU - Zhao, Gong Bo
PY - 2017/1/1
Y1 - 2017/1/1
N2 - © 2017 The Authors. We investigate the cosmological implications of studying galaxy clustering using a tomographic approach applied to the final Baryon Oscillation Spectroscopic Survey (BOSS) DR12 galaxy sample, including both auto- and cross-correlation functions between redshift shells. We model the signal of the full shape of the angular correlation function, ω(θ), in redshift bins using state-of-the-art modelling of non-linearities, bias and redshift-space distortions.We present results on the redshift evolution of the linear bias of BOSS galaxies, which cannot be obtained with traditional methods for galaxy-clustering analysis. We also obtain constraints on cosmological parameters, combining this tomographic analysis with measurements of the cosmic microwave background (CMB) and Type Ia supernova (SNIa).We explore a number of cosmological models, including the standard Γ cold darkmattermodel and its most interesting extensions, such as deviations from wDE=-1, non-minimal neutrino masses, spatial curvature and deviations from general relativity (GR) using the growth-index γ parametrization. These results are, in general, comparable to the most precise present-day constraints on cosmological parameters, and show very good agreement with the standard model. In particular, combining CMB, ω(θ) and SNIa, we find a value of wDE consistent with -1 to a precision better than 5 per cent when it is assumed to be constant in time, and better than 6 per cent when we also allow for a spatially curved Universe.
AB - © 2017 The Authors. We investigate the cosmological implications of studying galaxy clustering using a tomographic approach applied to the final Baryon Oscillation Spectroscopic Survey (BOSS) DR12 galaxy sample, including both auto- and cross-correlation functions between redshift shells. We model the signal of the full shape of the angular correlation function, ω(θ), in redshift bins using state-of-the-art modelling of non-linearities, bias and redshift-space distortions.We present results on the redshift evolution of the linear bias of BOSS galaxies, which cannot be obtained with traditional methods for galaxy-clustering analysis. We also obtain constraints on cosmological parameters, combining this tomographic analysis with measurements of the cosmic microwave background (CMB) and Type Ia supernova (SNIa).We explore a number of cosmological models, including the standard Γ cold darkmattermodel and its most interesting extensions, such as deviations from wDE=-1, non-minimal neutrino masses, spatial curvature and deviations from general relativity (GR) using the growth-index γ parametrization. These results are, in general, comparable to the most precise present-day constraints on cosmological parameters, and show very good agreement with the standard model. In particular, combining CMB, ω(θ) and SNIa, we find a value of wDE consistent with -1 to a precision better than 5 per cent when it is assumed to be constant in time, and better than 6 per cent when we also allow for a spatially curved Universe.
KW - Cosmological parameters
KW - Large-scale structure of Universe
U2 - 10.1093/mnras/stx633
DO - 10.1093/mnras/stx633
M3 - Article
VL - 468
SP - 2938
EP - 2956
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 3
ER -