Cosmological constraints from ACT Data Release 6
Abstract
In March 2025, the Atacama Cosmology Telescope (ACT) released its last cosmological analysis, along with a new cosmic microwave background (CMB) dataset. The sixth data release (DR6), including data collected from 2017 to 2022, covers 40% of the sky at arcminute resolution providing the most precise maps of CMB temperature and polarization over a large sky area. Here I give an overview of the ACT DR6 analysis and describe its constraints on fundamental assumptions of the standard cosmological model and extensions to it, including constraints on particle physics.
Fields of Study & Subjects
Cosmology and Gravitation Theories
Dark Matter and Cosmic Phenomena
Neutrino Physics Research
Publication details
- Journal / source
- European Physical Society Conference on High Energy Physics (EPS-HEP)
- Pages
- 094–094
- Publication date
- 6 February 2026
- Language
- EN