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The Atacama Cosmology Telescope: DR6 constraints on extended cosmological models

Journal of Cosmology and Astroparticle Physics
We use new cosmic microwave background (CMB) primary temperature and polarization anisotropy measurements from the Atacama Cosmology Telescope (ACT) Data Release 6 (DR6) to test foundational assumptions of the standard cosmological model, ΛCDM, and set ...
Erminia Calabrese   +171 more
semanticscholar   +1 more source

The cosmological constant and cosmological change

Physics Today, 1977
Is the Universe of infinite extent, or is it a finite system? Will it expand forever, or will it reach some maximum size before turning and collapsing upon itself like an inverse Big Bang? Just a few years ago, models of the conventional Friedman types were showing consistent, albeit tentative, evidence for an open, ever-expanding Universe. Since then,
openaire   +1 more source

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