Back to Search Start Over

The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey:signs of neutrino mass in current cosmological data sets

The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey:signs of neutrino mass in current cosmological data sets

Authors :
Ariel G. Sánchez
Will J. Percival
Christian Wagner
Donald P. Schneider
Chia-Hsun Chuang
Benjamin A. Weaver
Lado Samushia
Antonio J. Cuesta
Shun Saito
Jeremy L. Tinker
Hee-Jong Seo
Nicholas P. Ross
Ashley J. Ross
Joel R. Brownstein
Florian Beutler
Universitat de Barcelona
Source :
Beutler, F, Saito, S, Brownstein, J R, Chuang, C-H, Cuesta, A J, Percival, W J, Ross, A J, Ross, N P, Schneider, D P, Samushia, L, Sanchez, A G, Seo, H-J, Tinker, J L, Wagner, C & Weaver, B A 2014, ' The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey : signs of neutrino mass in current cosmological data sets ', Monthly Notices of the Royal Astronomical Society, vol. 444, no. 4, pp. 3501-3516 . https://doi.org/10.1093/mnras/stu1702, Recercat. Dipósit de la Recerca de Catalunya, instname, Dipòsit Digital de la UB, Universidad de Barcelona
Publication Year :
2014

Abstract

We investigate the cosmological implications of the latest growth of structure measurement from the Baryon Oscillation Spectroscopic Survey (BOSS) CMASS Data Release 11 with particular focus on the sum of the neutrino masses, $\sum m_{\nu}$. We examine the robustness of the cosmological constraints from the Baryon Acoustic Oscillation (BAO) scale, the Alcock-Paczynski effect and redshift-space distortions ($D_V/r_s$, $F_{\rm AP}$, $f\sigma_8$) of \citet{Beutler:2013b}, when introducing a neutrino mass in the power spectrum template. We then discuss how the neutrino mass relaxes discrepancies between the Cosmic Microwave Background (CMB) and other low-redshift measurements within $\Lambda$CDM. Combining our cosmological constraints with WMAP9 yields $\sum m_{\nu} = 0.36\pm0.14\,$eV ($68\%$ c.l.), which represents a $2.6\sigma$ preference for non-zero neutrino mass. The significance can be increased to $3.3\sigma$ when including weak lensing results and other BAO constraints, yielding $\sum m_{\nu} = 0.35\pm0.10\,$eV ($68\%$ c.l.). However, combining CMASS with Planck data reduces the preference for neutrino mass to $\sim 2\sigma$. When removing the CMB lensing effect in the Planck temperature power spectrum (by marginalising over $A_{\rm L}$), we see shifts of $\sim 1\sigma$ in $\sigma_8$ and $\Omega_m$, which have a significant effect on the neutrino mass constraints. In case of CMASS plus Planck without the $A_{\rm L}$-lensing signal, we find a preference for a neutrino mass of $\sum m_{\nu} = 0.34\pm 0.14\,$eV ($68\%$ c.l.), in excellent agreement with the WMAP9+CMASS value. The constraint can be tightened to $3.4\sigma$ yielding $\sum m_{\nu} = 0.36\pm 0.10\,$eV ($68\%$ c.l.) when weak lensing data and other BAO constraints are included.<br />Comment: 17 pages, 19 figures

Details

Language :
English
Database :
OpenAIRE
Journal :
Beutler, F, Saito, S, Brownstein, J R, Chuang, C-H, Cuesta, A J, Percival, W J, Ross, A J, Ross, N P, Schneider, D P, Samushia, L, Sanchez, A G, Seo, H-J, Tinker, J L, Wagner, C & Weaver, B A 2014, ' The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey : signs of neutrino mass in current cosmological data sets ', Monthly Notices of the Royal Astronomical Society, vol. 444, no. 4, pp. 3501-3516 . https://doi.org/10.1093/mnras/stu1702, Recercat. Dipósit de la Recerca de Catalunya, instname, Dipòsit Digital de la UB, Universidad de Barcelona
Accession number :
edsair.doi.dedup.....e7c78e321674bdfb672429f1a15dcdf1
Full Text :
https://doi.org/10.1093/mnras/stu1702