Limits on the neutrino mass from cosmology

Journal Article · Mon Jul 12 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3473882· OSTI ID:21413482

Melchiorri, Alessandro; De Bernardis, Francesco; Menegoni, Eloisa ^[1]

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1. Physics Department and sezione INFN, University of Rome 'La Sapienza', Ple Aldo Moro 2, 00185 Rome (Italy)

We use measurements of luminosity-dependent galaxy bias at several different redshifts, SDSS at z = 0.05, DEEP2 at z = 1 and LBGs at z = 3.8, combined with WMAP five-year cosmic microwave background anisotropy data and SDSS Red Luminous Galaxy survey three-dimensional clustering power spectrum to put constraints on cosmological parameters. Fitting this combined dataset, we show that the luminosity-dependent bias data that probe the relation between halo bias and halo mass and its redshift evolution are very sensitive to sum of the neutrino masses: in particular we obtain the upper limit of {Sigma}m{sub {nu}<}0.28 eV at the 95% confidence level for a {Lambda}CDM+m{sub {nu}}model, with a {sigma}8 equal to {sigma}8 = 0.759{+-}0.025 (1{sigma}). When we allow the dark energy equation of state parameter w to vary we find w -1.30{+-}0.19 for a general wCDM+m{sub {nu}}model with the 95% confidence level upper limit on the neutrino masses at {Sigma}m{sub {nu}<}0.59 eV. The constraint on the dark energy equation of state further improves to w = -1.125{+-}0.092 when using also ACBAR and supernovae Union data, in addition to above, with a prior on the Hubble constant from the Hubble Space Telescope. Finally, we have investigated the ability of future cosmic shear measurements, like those achievable with the proposed Euclid mission, to constrain differences in the mass of individual neutrino species.

• OSTI ID: 21413482
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1256; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTRONOMY AND ASTROPHYSICS
ANISOTROPY
BINARY STARS
BRIGHTNESS
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ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EQUATIONS
EQUATIONS OF STATE
ERUPTIVE VARIABLE STARS
FERMIONS
GALAXIES
GALAXY CLUSTERS
HUBBLE EFFECT
LEPTONS
LUMINOSITY
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NEUTRINOS
NONLUMINOUS MATTER
OPTICAL PROPERTIES
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RED SHIFT
RELICT RADIATION
SPACE
SPECTRA
STARS
SUPERNOVAE
THREE-DIMENSIONAL CALCULATIONS
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