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New upper limit on the total neutrino mass from the 2 degree field galaxy redshift survey |
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| 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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