Elgaroy, O.; Lahav, O.; Percival, W.J.; Peacock, J.A.; Madgwick, D.S.; Bridle, S.L.; Baugh, C.M.; ... Taylor, K.; + view all Elgaroy, O.; Lahav, O.; Percival, W.J.; Peacock, J.A.; Madgwick, D.S.; Bridle, S.L.; Baugh, C.M.; Baldry, I.K.; Bland-Hawthorn, J.; Bridges, T.; Cannon, R.; Cole, S.; Colless, M.; Collins, C.; Couch, W.; Dalton, G.; De Propis, R.; Driver, S.P.; Efstathiou, G.P.; Ellis, R.S.; Frenk, C.S.; Glazebrook, K.; Jackson, C.; Lewis, I.; Lumsden, S.; Maddox, S.; Norberg, P.; Peterson, B.A.; Sutherland, W.; Taylor, K.; - view fewer (2002) A new upper limit on the total neutrino mass from the 2dF galaxy redshift survey. Physical Review Letters , 89 (6) , Article e061301. 10.1103/PhysRevLett.89.061301.

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Abstract

We constrain fν≡Ων/Ωm, 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 fν<0.13 (at 95% confidence) for a prior of 0.1<Ωm<0.5, and assuming the scalar spectral index n=1. This translates to an upper limit on the total neutrino mass mν,tot<1.8   eV for “concordance” values of Ωm and the Hubble constant.

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