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New upper limit on the total neutrino mass from the 2 degree field galaxy redshift survey
Authors:Elgarøy Ø  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 Propris 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
Institution:Institute of Astronomy, University of Cambridge, Madingley Road, United Kingdom.
Abstract:We constrain f(nu) identical with Omega(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
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