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Título: | Constraints on neutrino masses from Planck and Galaxy clustering data |
Autor: | Giusarma, Elena; Putter, Roland de CSIC; Ho, Shirley; Mena, Olga CSIC ORCID | Palabras clave: | Digital sky survey Baryon acoustic-oscillations |
Fecha de publicación: | 10-sep-2013 | Editor: | American Physical Society | Citación: | Physical Review - Section D - Particles and Fields 88 (6): 063515 - 9 (2013) | Resumen: | We present here bounds on neutrino masses from the combination of recent Planck cosmic microwave background (CMB) measurements and galaxy clustering information from the Baryon Oscillation Spectroscopic Survey, part of the Sloan Digital Sky Survey-III. We use the full shape of either the photometric angular clustering (Data Release 8) or the 3D spectroscopic clustering (Data Release 9) power spectrum in different cosmological scenarios. In the Lambda CDM scenario, spectroscopic galaxy clustering measurements improve significantly the existing neutrino mass bounds from Planck data. We find Sigma m(v) < 0.39 eV at 95% confidence level for the combination of the 3D power spectrum with Planck CMB data (wi lensing included) and Wilkinson Microwave Anisoptropy Probe 9-year polarization measurements. Therefore, robust neutrino mass constraints can be obtained without the addition of the prior on the Hubble constant from Hubble Space Telescope. In extended cosmological scenarios with a dark energy fluid or with nonflat geometries, galaxy clustering measurements are essential to pin down the neutrino mass bounds, providing in the majority of cases better results than those obtained from the associated measurement of the baryon acoustic oscillation scale only. In the presence of a freely varying (constant) dark energy equation of state, we find Sigma m(v) < 0.49 eV at 95% confidence level for the combination of the 3D power spectrum with Planck CMB data (with lensing included) and Wilkinson Microwave Anisoptropy Probe 9-year polarization measurements. This same data combination in nonflat geometries provides the neutrino mass bound Sigma m(v) < 0.35 eV at 95% confidence level. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevD.88.063515 | URI: | http://hdl.handle.net/10261/126426 | DOI: | 10.1103/PhysRevD.88.063515 | ISSN: | 1550-7998 | E-ISSN: | 1475-7516 |
Aparece en las colecciones: | (IFIC) Artículos |
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Constraints on neutrino.pdf | 256,98 kB | Adobe PDF | Visualizar/Abrir |
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