| | |
| | |
Stat |
Members: 3645 Articles: 2'504'585 Articles rated: 2609
24 April 2024 |
|
| | | |
|
Article overview
| |
|
A new upper limit on the total neutrino mass from the 2dF Galaxy Redshift Survey | O. Elgaroy
; O. Lahav
; W. J. Percival
; J. A. Peacock
; D. S. Madgwick
; S. L. Bridle
; C. M. Baugh
; I. K. Baldry
; J. Bland-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. Sutherland
; K. Taylor
; | Date: |
9 Apr 2002 | Journal: | Phys.Rev.Lett. 89 (2002) 061301 | Subject: | astro-ph hep-ph | Affiliation: | IoA, Cambridge), O. Lahav, W. J. Percival, J. A. Peacock, D. S. Madgwick, S. L. Bridle, C. M. Baugh, I. K. Baldry, J. Bland-Hawthorn, T. Bridges, R. Cannon, S. Cole, M. Colless, C. Collins, W. Couch, G. Dalton, R. De Propris, S. P. Driver, G. P. Efstat | Abstract: | We constrain f_nu = 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 2dF 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 and m_nu,tot < 1.8 eV for "concordance" values of Omega_m and the Hubble constant. Very similar results are obtained with a prior on Omega_m from Type Ia supernovae surveys, and with marginalization over n. | Source: | arXiv, astro-ph/0204152 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |