Welcome on the pages of the Cosmology team !
Our research reaches from the primordial fluctuations in the Universe down to its structuration at the largest scales in the most recent era. We study how the cosmic web elements are forming and evolving both through modelling and observations.
Latest news
A study conducted by Tony Bonnaire (IAS, CNRS & Université Paris-Saclay) together with Raphaël Urfin and Giulio Biroli (ENS Paris, CNRS & PSL) and Marc Mézard (Bocconi University) sheds new light on a central question in generative AI research: how diffusion models — the key technology behind modern generative AI — manage to generalize efficiently before memorizing the data on which they are trained.
The Simons Observatory (SO has reached a significant milestone with the successful installation of its Large Aperture Telescope (LAT).
At midday on Wednesday March 19, 2025, ESA released the first survey data from the Euclid space mission.
Stefano Gallo, Cosmology team, defended his thesis entitled ‘On Galaxy Cluster modelling in the context of Cosmological analyses’, under the supervision of Nabila Aghanim and Marian Douspis. He is now a new doctor at the Université Paris-Saclay, and will be heading for Germany. Congratulations to him!
On May 28, CNES has officially confirmed the balloon-borne project BISOU for Phase A. The study will be carried out over the next two years and marks a transformational step towards an ambitious space-borne CMB spectrometer in the ESA Voyage 2050 program.
