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 (1)

13 oct. 2025, 14:40
20m
Institut Astrophysique de Paris

Institut Astrophysique de Paris

98 bis boulevard Arago 75014 Paris

Orateur

Etienne Camphuis (Institut d'Astrophysique de Paris)

Description

I will present measurements of the temperature and E-mode polarization angular power spectra of the cosmic microwave background (CMB) from observations covering 4% of the sky with SPT-3G, the current camera on the South Pole Telescope. These maps are the deepest ever used in a CMB TT/TE/EE analysis. Both the maps and resulting power spectra have been rigorously validated through blind and unblind tests. Our measurements of the lensed EE and TE spectra are the most precise to date from $\ell=1800$ to $4000$ and $\ell=2200$ to $4000$, respectively. My presentation will cover the measured band powers, validation methods, data model, and cosmological implications.

Auteur

Etienne Camphuis (Institut d'Astrophysique de Paris)

Co-auteurs

Documents de présentation