"Cosmology in the era of large overlapping surveys: new horizons and challenges"
Prof. Elena Pierpaoli
University of Southern California (USA)

Monday 1/7/2024 15:00
Aula A, Dipartimento di Fisica
Live streaming: Teams link

Lessons learned from the CMB, and a glimpse towards the future: The study of the Cosmic Microwave Background (CMB) during the past twenty years has allowed tremendous progress in our understanding of the Universe. It established the nature of the early Universe process that set up the anisotropies, it consolidated the evidence for Dark Matter (DM), it allowed us to determine the time when luminous structures formed, it determined the global geometry of the Universe, etc. I will briefly review those advances, discuss why they were worth a Nobel prize, and then introduce the current big questions. I will describe what currently-planned CMB experiments will achieve, beyond what is known, and discuss synergies with other probes based on the study of large scale structure in the Universe.

Monday 8/7/2024 15:00
Aula A, Dipartimento di Fisica
Live streaming: Teams link

Adventuring into secondary anisotropies: I will dive more deeply in what we expect to gain from the study of CMB secondary anisotropies and cross correlations with large-scale structure. I will first present the physics behind these anisotropies, which are typically due to either gravitational effects or scattering between CMB photons and free electrons at low redshift. I will then discuss which "big questions" they are expected to answer, and what are the practical challenges to achieve these goals.