5 papers
Beyond ÎCDM with the SKA Observatory -- I: Probing Gravity on Cosmological Scales
S. Camera, C. Addis, S. L. Guedezounme +26
General relativity (GR) is currently the best description of the gravitational interaction at our disposal and is one of the foundations of the concordance cosmological model. For…
Neutrino mass limits and decaying dark matter: background evolution versus perturbations
Thomas Montandon, Vivian Poulin, Thomas Rink +1
We revisit cosmological neutrino mass bounds when a fraction of dark matter is allowed to decay to massless dark radiation. By compensating the late-time increase in the matter den…
A frequentist view on the two-body decaying dark matter model
Thomas Montandon, Elsa M. Teixeira, Adèle Poudou +1
Decaying dark matter (DDM) has emerged as an interesting framework to extend the -cold-dark-matter (LCDM) model, as many particle physics models predict that dark matter may no…
Implications of distance duality violation for the tension and evolving dark energy
Elsa M. Teixeira, William Giarè, Natalie B. Hogg +3
We investigate whether a violation of the distance duality relation (DDR), , connecting the angular diameter and luminosity distances, can explain the Hubb…
Self-interacting neutrinos in light of recent CMB and LSS data
Adèle Poudou, Théo Simon, Thomas Montandon +2
We update constraints on a simple model of self-interacting neutrinos involving a heavy scalar mediator with universal flavor coupling. According to past literature, such a model i…