Cosmological constraints from ACT Data Release 6
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.
Authors
- Adrien La Posta
Publication Details
- Published
- 2026-02-06
- DOI
- https://doi.org/10.22323/1.485.0094
- Primary Topic
- Cosmology and Gravitation Theories
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- U.S. Department of Energy
- National Aeronautics and Space Administration
- Princeton University
- University of Pennsylvania
- Compute Canada
- Government of Ontario
- National Energy Research Scientific Computing Center
- University of Toronto
- Agencia Nacional de Investigación y Desarrollo
- National Institute of Standards and Technology
- Office of Science
- Lawrence Berkeley National Laboratory