| Issue |
A&A
Volume 532, August 2011
|
|
|---|---|---|
| Article Number | A67 | |
| Number of page(s) | 5 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361/201117025 | |
| Published online | 22 July 2011 | |
Reactor sterile neutrinos, dark energy, and the age of the universe
Institute of theoretical astrophysics, University of Oslo, Box 1029, 0315 Oslo, Norway
e-mail: j.r.kristiansen@astro.uio.no
Received: 5 April 2011
Accepted: 7 May 2011
There are indications that the neutrino oscillation data from reactor experiments and the LSND and MiniBooNE experiments show a preference for two sterile neutrino species, both with masses in the eV region. We show that this result has a significant impact on some important cosmological parameters. Specifically, we use a combination of CMB, LSS, and SN1A data and show that the existence of two light, sterile neutrinos would rule out the cosmological constant as dark energy at a 95% confidence level and lower the expansion age of the universe to 12.58 ± 0.26 Gyr.
Key words: cosmological parameters / dark matter / dark energy / Elementary particles / Neutrinos
© ESO, 2011
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.