Speaker
Description
The accelerated expansion of the Universe, commonly attributed to the cosmological constant (Λ) in the framework of General Relativity, remains one of the central open questions in modern physics. A standard approach to probing cosmology with large-scale structure data relies on two-point statistics, which, while powerful, are limited to capturing Gaussian information and thus fail to account for signatures arising from the non-linear growth of structure. This project aims to leverage the Year 3 data release of the Hyper Suprime-Cam Subaru Strategic Program (HSC-Y3) to investigate non-Gaussian probes, such as higher-order statistics and morphological descriptors, applied to weak lensing maps. These measurements will be systematically compared to simulated predictions generated under both the standard ΛCDM paradigm and alternative modified gravity scenarios, such as f(R) models. By exploiting the additional information encoded in the non-Gaussian features of the cosmic matter distribution, this research seeks to tighten cosmological constraints and explore possible deviations from General Relativity that may provide insights into the physics driving cosmic acceleration.