Modeling cosmological observables beyond the perturbative regime

PhD Program

Speaker

Francisco Germano Maion

When

2025/09/10
10:30

Place

CFM Auditorium (Donostia / San Sebastían)

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PhD Thesis defense by Francisco Germano Maion

Supervisor: Raúl Esteban Angulo de la Fuente (DIPC, Ikerbasque Research Professor)

Computational Cosmology

Modern measurements in cosmology are extremely precise, but the models used for their interpretation are insufficient, causing a great loss of valuable information. This is particularly dramatic in the case of weak gravitational lensing, as most of the information is concentrated on small spatial scales, where several physical effects contaminate the signal of interest, and perturbative methods are no longer useful for their modeling. Scientific discoveries with weak lensing will require precise modeling of these effects. In this thesis, we develop several new techniques that allow us to model one such effect, that of galaxy intrinsic-alignments, and to measure it in detail in cosmological simulations.