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

SPT-3G D1: CMB Temperature and Polarization Power Spectra and Cosmology from 2019–2020 Observations of the SPT-3G Main Field (2)

13 oct. 2025, 15:00
20m
Institut Astrophysique de Paris

Institut Astrophysique de Paris

98 bis boulevard Arago 75014 Paris

Orateur

Ali Rida Khalife (IAP-CNRS and Sorbonne University)

Description

In the second part of this talk, I will first briefly present the lensing bandpowers used in this analysis. These are lensing data inferred from the E-mode polarization maps using the Marginal Unbiased Score Estimator (MUSE), and they are the most precise to date at $L > 350$. Second, I will present constraints on $\Lambda$CDM and a few of its extensions with CMB data, highlighting the constraining power of ground-based experiments SPT-3G and ACT. I will show the consistency between SPT-3G, ACT and Planck in constraints on $\Lambda$CDM and the status of the Hubble tension and clustering of matter. I will also compare constraints on the excess of lensing previously seen in Planck data to that from SPT-3G and in combination with ACT. I finish by presenting constraints on neutrino mass and additional relativistic species from the CMB.

Auteur

Dr Etienne Camphuis (IAP-CNRS and Sorbonne University)

Co-auteurs

Ali Rida Khalife (IAP-CNRS and Sorbonne University) Dr Lennart Balkenhol (IAP-CNRS and Sorbonne University)

Documents de présentation