Addressing the Hubble tension with decaying dark matter

by Prof. Thomas Tram (Aarhus University)

Tuesday 15 Feb 2022, 13:00 → 14:00 Europe/Brussels

E/3rd floor-E.349 - Seminar room (E.349) (Marc de Hemptinne (chemin du Cyclotron, 2, Louvain-la-Neuve))

I will start by giving a general introduction to cosmological parameter inference and its impact on the Hubble tension, i.e. the discrepancy between local measurements of the current expansion rate of the Universe as measured by local observations compared to the value inferred from the Cosmic Microwave Background (CMB). I will then consider a class of models where a fraction of the dark matter decays and discuss wether or not a solution can be found here. Lastly, I will show an exciting new way of doing cosmological inference that my group and I are currently developing.

Zoom link