The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey:signs of neutrino mass in current cosmological data sets
| Autor: | 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 |
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| Přispěvatelé: | Universitat de Barcelona |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Cosmology and Gravitation
Cosmology and Nongalactic Astrophysics (astro-ph.CO) Cosmic microwave background Cosmic background radiation FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Expanding universe Cosmology symbols.namesake surveys Expansió de l'univers Observacions astronòmiques Neutrins Planck Neutrinos cosmological parameters Weak gravitational lensing Physics Cosmologia Astronomy and Astrophysics Planck temperature observations [cosmology] Baryon Space and Planetary Science symbols High Energy Physics::Experiment large-scale structure of Universe Neutrino Astronomical observations Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | 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 |
| Popis: | 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. Comment: 17 pages, 19 figures |
| Databáze: | OpenAIRE |
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