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Journal of Cosmology and Astroparticle Physics· 2025

The Atacama Cosmology Telescope: DR6 constraints on extended cosmological models

Erminia Calabrese, J. Colin Hill, Hidde T. Jense, Adrien La Posta et al.

Short summary

Atacama Cosmology Telescope (ACT) DR6 data, combined with Planck and BAO measurements, show no statistically significant evidence for extensions to the standard Lambda-CDM cosmological model, including variations in fundamental constants or the presence of extra relativistic species.

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Field: Astronomy and Astrophysics

Astronomy and AstrophysicsPhysics and Astronomy