82 citations · 369 across the 14 of their papers we have counts for
14 papers
Cosmology with sterile neutrino masses from oscillation experiments
Jostein R. Kristiansen, Øystein Elgarøy, Carlo Giunti +1
There are hints, both from cosmology and from neutrino oscillation experiments, that one or two sterile neutrinos with eV masses are favored. We consider the implications of combin…
Perihelion precession in spherically symmetric Kaluza-Klein theories
Oystein Elgaroy, Oyvind Gron, Sigbjorn Hervik
We consider the perihelion precession and bending of light in a class of Kaluza-Klein models and show that the "electric redshift" model, proposed in Zhang (2006) to explain the re…
Detection of transplanckian effects in the cosmic microwave background
Nicolaas E. Groeneboom, Oystein Elgaroy
Quantum gravity effects are expected to modify the primordial density fluctuations produced during inflation and leave their imprint on the cosmic microwave background observed tod…
Neutrino Mass, Dark Energy, and the Linear Growth Factor
Angeliki Kiakotou, Oystein Elgaroy, Ofer Lahav
We study the degeneracies between neutrino mass and dark energy as they manifest themselves in cosmological observations. In contradiction to a popular formula in the literature, t…
On using the CMB shift parameter in tests of models of dark energy
Oystein Elgaroy, Tuomas Multamaki
The so-called shift parameter is related to the position of the first acoustic peak in the power spectrum anisotropies of the cosmic microwave background (CMB) anisotropies. It is…
Upper limits on neutrino masses from cosmology
Oystein Elgaroy
Upper limits on neutrino masses from cosmology have been reported recently to reach the impressive sub-eV level, which is competitive with future terrestrial neutrino experiments.…