13–15 oct. 2025
Institut Astrophysique de Paris
Fuseau horaire Europe/Paris

CMB + BAO + SN: Bayesian Model Comparisons and Cross-Dataset Tensions

13 oct. 2025, 17:10
20m
Institut Astrophysique de Paris

Institut Astrophysique de Paris

98 bis boulevard Arago 75014 Paris

Orateur

Dr Lukas Hergt (IJCLab, IN2P3, CNRS)

Description

We present a unified assessment of Bayesian model comparisons and cross-dataset tensions for the (still) standard $\Lambda$CDM model and some minimal extensions (curvature $\Omega_K$, sum of neutrino masses $\sum{m_\nu}$, dynamic dark energy $w$, or $w_0$ and $w_a$) in light of data from the cosmic microwave background (CMB), baryon acoustic oscillations (BAO), and supernovae (SN). Our analysis highlights how specific combinations drive or relieve tensions.

Auteur

Dr Lukas Hergt (IJCLab, IN2P3, CNRS)

Co-auteurs

Dr Sophie Henrot-Versillé (IJCLab, IN2P3, CNRS) Dr Matthieu Tristram (IJCLab, IN2P3, CNRS) Douglas Scott (UBC)

Documents de présentation