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New upper limit on the total neutrino mass from the 2 degree field galaxy redshift survey | | Ø Elgarøy
; O Lahav
; W J Percival
; J A Peacock
; D S Madgwick
; S L Bridle
; C M Baugh
; I K Baldry
; J Bl
; -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 Ellis
; C S Frenk
; K Glazebrook
; C Jackson
; I Lewis
; S Lumsden
; S Maddox
; P Norberg
; B A Peterson
; W Sutherl
; K Taylor
; | | Date: |
5 Aug 2002 | | Journal: | Phys Rev Lett, 89 (6), 061301 | | 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<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. | | Source: | PubMed, pmid12190573 | | Services: | Forum | Review | Favorites | |
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