Speaker
Nicola Deiosso
(CIEMAT)
Description
The Dark Energy Spectroscopic Instrument (DESI) Data Release 2 (DR2) enables precision cosmological inference beyond the standard ΛCDM model, exploring extensions such as massive neutrinos and time-varying dark energy (w₀–wₐ). The analysis includes a comprehensive validation of BAO measurements through mock-based covariance estimation and robustness tests in both configuration and Fourier space. Complementary results from the final Dark Energy Survey (DES) BAO and supernova samples are combined to probe the cosmic expansion history and assess consistency across independent datasets, providing new insights into the possible origins of current tensions in cosmological parameters.
Author
Nicola Deiosso
(CIEMAT)