New Neutrino Mass Bounds from SDSS-III Data Release 8 Photometric Luminous Galaxies
NAGIOS: RODERIC FUNCIONANDO

New Neutrino Mass Bounds from SDSS-III Data Release 8 Photometric Luminous Galaxies

DSpace Repository

New Neutrino Mass Bounds from SDSS-III Data Release 8 Photometric Luminous Galaxies

Show simple item record

dc.contributor.author de Putter, Roland
dc.contributor.author Mena Requejo, Olga
dc.contributor.author Giusarma, Elena
dc.contributor.author Ho, Shirley
dc.date.accessioned 2014-07-24T11:38:13Z
dc.date.available 2014-07-24T11:38:13Z
dc.date.issued 2012
dc.identifier.uri http://hdl.handle.net/10550/37308
dc.description.abstract We present neutrino mass bounds using 900,000 luminous galaxies with photometric redshifts measured from Sloan Digital Sky Survey III Data Release 8. The galaxies have photometric redshifts between z = 0.45 and z = 0.65 and cover 10,000 deg(2), thus probing a volume of 3 h(-3) Gpc(3) and enabling tight constraints to be derived on the amount of dark matter in the form of massive neutrinos. A new bound on the sum of neutrino masses Sigma m nu < 0.27 eV, at the 95% confidence level (CL), is obtained after combining our sample of galaxies, which we call CMASS with Wilkinson Microwave Anisotropy Probe (WMAP) seven-year cosmic microwave background data and the most recent measurement of the Hubble parameter from the Hubble Space Telescope (HST). This constraint is obtained with a conservative multipole range of 30 < l < 200 in order to minimize nonlinearities, and a free bias parameter in each of the four redshift bins. We study the impact of assuming this linear galaxy bias model using mock catalogs and find that this model causes a small (similar to 1 sigma-1.5 sigma) bias in Omega(DM)h(2). For this reason, we also quote neutrino bounds based on a conservative galaxy bias model containing additional, shot-noise-like free parameters. In this conservative case, the bounds are significantly weakened, e. g., Sigma m(nu) < 0.38 eV (95% CL) for WMAP+HST+CMASS (l(max) = 200). We also study the dependence of the neutrino bound on the multipole range (l(max) = 150 versus l(max) = 200) and on which combination of data sets is included as a prior. The addition of supernova and/or baryon acoustic oscillation data does not significantly improve the neutrino mass bound once the HST prior is included. A companion paper describes the construction of the angular power spectra in detail and derives constraints on a general cosmological model, including the dark energy equation of state w and the spatial curvature Omega(K), while a second companion paper presents a measurement of the scale of baryon acoustic oscillations from the same data set. All three works are based on the catalog by Ross et al.
dc.language.iso eng
dc.relation.ispartof Astrophysical Journal, 2012, vol. 761 , num. 1, p. 12
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source de Putter, Roland Mena Requejo, Olga Giusarma, Elena Ho, Shirley 2012 New Neutrino Mass Bounds from SDSS-III Data Release 8 Photometric Luminous Galaxies Astrophysical Journal 761 1 12
dc.subject Física
dc.title New Neutrino Mass Bounds from SDSS-III Data Release 8 Photometric Luminous Galaxies
dc.type info:eu-repo/semantics/article
dc.date.updated 2014-07-24T11:38:13Z
dc.identifier.doi http://dx.doi.org/10.1088/0004-637X/761/1/12
dc.identifier.idgrec 084357

View       (829.0Kb)

This item appears in the following Collection(s)

Show simple item record

Search DSpace

Advanced Search

Browse

Statistics