20–22 avr. 2022
École Normale Supérieure, Paris
Fuseau horaire Europe/Paris

Simulation-Based Inference in Strong Gravitational Lensing

Confirmed
22 avr. 2022, 16:00
15m
École Normale Supérieure, Paris

École Normale Supérieure, Paris

45 rue d'Ulm Paris, France
Talk (submitted) Talks

Orateur

Ronan Legin (Université de Montréal)

Description

In the coming years, a new generation of sky surveys, in particular, Euclid Space Telescope, and the Rubin Observatory's Legacy Survey of Space and Time (LSST) will discover more than 200,000 new strong gravitational lenses, an increase of more than two orders of magnitude compared to currently known samples. Accurate and fast analysis of such large volumes of data within a clear statistical framework is crucial for all sciences enabled by strong lensing. In this talk, I will discuss the critical role of simulation-based inference (SBI) in the context of strong gravitational lensing analysis for these surveys. I will present our results related to obtaining the posteriors of the macro-parameters of individual strong lenses using machine learning models and share our ongoing work in inferring population-level statistics using hierarchical models.

Auteur principal

Ronan Legin (Université de Montréal)

Co-auteurs

Prof. Yashar Hezaveh (Université de Montréal) Prof. Laurence Perreault-Levasseur (Université de Montréal)

Documents de présentation

Aucun document.