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New upper limit on the total neutrino mass from the 2 Degree Field Galaxy Redshift Survey

Elgaroy, O; Lahav, O; Percival, WJ; Peacock, JA; Madgwick, DS; Bridle, SL; Baugh, CM; ... Taylor, K; + view all (2002) New upper limit on the total neutrino mass from the 2 Degree Field Galaxy Redshift Survey. PHYS REV LETT , 89 (6) , Article 061301. 10.1103/PhysRevLett.89.061301. Green open access

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Abstract

We constrain f(nu)equivalent toOmega(nu)/Omega(m), the fractional contribution of neutrinos to the total mass density in the Universe, by comparing the power spectrum of fluctuations derived from the 2 Degree Field Galaxy Redshift Survey with power spectra for models with four components: baryons, cold dark matter, massive neutrinos, and a cosmological constant. Adding constraints from independent cosmological probes we find f(nu)<0.13 (at 95% confidence) for a prior of 0.1<Omega(m)<0.5, and assuming the scalar spectral index n=1. This translates to an upper limit on the total neutrino mass m(nu,tot)<1.8 eV for "concordance" values of Omega(m) and the Hubble constant.

Type: Article
Title: New upper limit on the total neutrino mass from the 2 Degree Field Galaxy Redshift Survey
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.89.061301
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.89.061301
Language: English
Keywords: POWER-SPECTRUM, MATTER, OSCILLATIONS, SUPERNOVAE, CLUSTERS, DENSITY
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/152318
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