Orateur
Description
Type Ia Supernovae (SNe Ia) are at the center of current tensions on H₀ and w, the parameters characterising the expansion of the Universe. Controlling survey cross-calibration, selection functions, and SNe Ia variability is essential to avoid systematic biases in cosmological inference. Realistic simulations are key to addressing these systematics, but existing tools remain limited in their ability to capture the full complexity of SNe Ia populations and survey-specific selection effects.
I will present the ongoing developments of skysurvey, extending the framework to incorporate SNe Ia variability, population evolution with redshift, and calibration systematics. These developments, carried out in preparation for higher-redshift surveys such as the LSST survey, aim to produce next-generation simulations that can be used to assess and correct systematic biases in cosmological parameter inference.