High-resolution weak lensing simulations with MillenniumTNG
Fulvio Ferlito (MPA, Garching)
Tuesday 14/10/2025 @ 14:00, Sala Antonio Sollima (IV piano Battiferro)
The upcoming generation of weak lensing surveys features unprecedented angular resolution and sky coverage. To fully exploit these rich and complex data far into the non-linear regime, it is crucial to provide high-fidelity numerical predictions. During this talk I will focus on weak gravitational lensing numerical experiments, based on the MillenniumTNG simulation suite, able to combine a cosmological volume with the state-of-the-art galaxy formation sub-grid modeling of IllustrisTNG. I use these simulations to assess the impact of baryons, neutrinos, intrinsic alignment of galaxies, as well as numerical aspects such as angular resolution and ray-tracing, on popular weak lensing statistics.