540 citations · 4.4k across the 71 of their papers we have counts for
5 papers · 1 filter
Measuring the speed of light with Baryon Acoustic Oscillations
Vincenzo Salzano, Mariusz P. Dabrowski, Ruth Lazkoz
In this letter we describe a new method to use Baryon Acoustic Oscillations (BAO) to derive a constraint on the possible variation of the speed of light. The method relies on the f…
Observational constraints on the unified dark matter and dark energy model based on the quark bag model
Ariadna Montiel, Vincenzo Salzano, Ruth Lazkoz
In this work we investigate if a small fraction of quarks and gluons, which escaped hadronization and survived as a uniformly spread perfect fluid, can play the role of both dark m…
Parameter estimation of a nonlinear magnetic universe from observations
Ariadna Montiel, Nora Bretón, Vincenzo Salzano
The cosmological model consisting of a nonlinear magnetic field obeying the Lagrangian L= γF^α, F being the electromagnetic invariant, coupled to a Robertson-Walker geometry is tes…
Anisotropic expansion and SNIa: an open issue
Jose Beltran Jimenez, Vincenzo Salzano, Ruth Lazkoz
We review the appropriateness of using SNIa observations to detect potential signatures of anisotropic expansion in the Universe. We focus on Union2 and SNLS3 SNIa datasets and use…
Nonparametric reconstruction of the cosmic expansion with local regression smoothing and simulation extrapolation
Ariadna Montiel, Ruth Lazkoz, Irene Sendra +2
In this work we present a nonparametric approach, which works on minimal assumptions, to reconstruct the cosmic expansion of the Universe. We propose to combine a locally weighted…