Radio astronomy is undergoing a period of rapid advances because of digital techniques that allow an improvement in sensitivity of several orders of magnitude. The universe nearby and the initial conditions of the universe have now been characterized at great precision thanks to modern galaxy surveys and precision measurements of the cosmic microwave background. But the intermediate epoch, sometimes dubbed the “Dark Ages,” remains largely unexplored. However precision measurements using the 21cm line will allow a detailed three-dimensional characterization of this intermediate epoch.

Courant 2015, la collaboration Planck a publié les résultats de la mesure du spectre de puissance angulaire des anisotropies du CMB en température et polarisation, permettant de contraindre avec une précision sans précédent les six principaux paramètres nécessaires pour expliquer les données.

Matrices de bolomètres supraconducteurs pour la mesure de la polarisation du fond diffus Cosmologique

Composite dark matter of the Universe

Preparing Dark Energy Studies with Euclid: Simulating Images

Dark energy and dark matter are the great mysteries in cosmology today. Understanding the distribution of dark matter in the Universe and obtaining strong constraints on the nature of dark energy and its possible origins are the main goals of ESA’s dark energy mission Euclid.