A fixed gravitational-redshift contribution from a local void fits high-redshift data almost as well as ΛCDM, but the data currently favour z0=0.
A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation
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abstract
The blackbody radiation left over from the Big Bang has been transformed by the expansion of the Universe into the nearly isotropic 2.73K Cosmic Microwave Background. Tiny inhomogeneities in the early Universe left their imprint on the microwave background in the form of small anisotropies in its temperature. These anisotropies contain information about basic cosmological parameters, particularly the total energy density and curvature of the universe. Here we report the first images of resolved structure in the microwave background anisotropies over a significant part of the sky. Maps at four frequencies clearly distinguish the microwave background from foreground emission. We compute the angular power spectrum of the microwave background, and find a peak at Legendre multipole $\ell_{peak}=(197 \pm 6)$, with an amplitude $DT_{200}=(69 \pm 8)\mu K$. This is consistent with that expected for cold dark matter models in a flat (euclidean) Universe, as favoured by standard inflationary scenarios.
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2026 3representative citing papers
Stellar age analysis of a large Galactic sample gives a cosmic age of 13.73 Gyr, consistent with LambdaCDM but inconsistent with some Hubble tension resolutions implying 12.9 Gyr.
Particle cosmology emerged as a settled subfield of particle physics between 1980 and 2000, marked by the 1984 Fermilab conference and 1994 Snowmass study.
citing papers explorer
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Constraints on the gravitational potential from DESI DR2 BAO and its implications for the local void scenario
A fixed gravitational-redshift contribution from a local void fits high-redshift data almost as well as ΛCDM, but the data currently favour z0=0.
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The age of the Universe from a large sample of the oldest Galactic stars
Stellar age analysis of a large Galactic sample gives a cosmic age of 13.73 Gyr, consistent with LambdaCDM but inconsistent with some Hubble tension resolutions implying 12.9 Gyr.
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Particle Cosmology: 1980-2000
Particle cosmology emerged as a settled subfield of particle physics between 1980 and 2000, marked by the 1984 Fermilab conference and 1994 Snowmass study.