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

O Elgaroy, O Lahav, W J Percival, J A Peacock, D S Madgwick, S L Bridle, C M Baugh, I K Baldry, J Bland-Hawthorn, T Bridges, R Cannon, S Cole, M Colless, C Collins, W Couch, G Dalton, R De Propris, S P Driver, G P Efstathiou, R S EllisC S Frenk, K Glazebrook, C Jackson, I Lewis, S Lumsden, S Maddox, P Norberg, B A Peterson, W Sutherland, K Taylor

Research output: Contribution to journalArticlepeer-review

159 Citations (Scopus)

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.

Original languageEnglish
Number of pages4
JournalPhysical Review Letters
Volume89
DOIs
Publication statusPublished - 5 Aug 2002

Keywords

  • POWER-SPECTRUM
  • MATTER
  • OSCILLATIONS
  • SUPERNOVAE
  • CLUSTERS
  • DENSITY

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