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A new upper limit on the total neutrino mass from the 2dF galaxy redshift survey

Elgaroy, O.; Lahav, O.; Percival, W.J.; Peacock, J.A.; Madgwick, D.S.; Bridle, S.L.; Baugh, C.M.; ... Taylor, K.; + view all (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. Green open access

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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.

Type: Article
Title: A new upper limit on the total neutrino mass from the 2dF 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
Additional information: © 2002 The American Physical Society
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
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/9693
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