Format:
8
ISSN:
0927-6505
Content:
A precise measurement of the curvature of the Universe is of prime importance for cosmology since it could not only confirm the paradigm of primordial inflation but also help in discriminating between different early-Universe scenarios. Recent observations, while broadly consistent with a spatially flat standard Λ Cold Dark Matter (ΛCDM) model, show tensions that still allow (and, in some cases, even suggest) a few percent deviations from a flat universe. In particular, the Planck Cosmic Microwave Background power spectra, assuming the nominal likelihood, prefer a closed universe at more than 99% confidence level. While new physics could be at play, this anomaly may be the result of an unresolved systematic error or just a statistical fluctuation. However, since positive curvature allows a larger age of the Universe, an accurate determination of the age of the oldest objects provides a smoking gun in confirming or falsifying the current flat ΛCDM model.
Note:
Version of record 25 May 2021
,
Gesehen am 30.03.2022
In:
Astroparticle physics, Amsterdam [u.a.] : Elsevier Science, 1992, 131(2021), Artikel-ID 102607, Seite 1-8, 0927-6505
In:
volume:131
In:
year:2021
In:
elocationid:102607
In:
pages:1-8
In:
extent:8
Language:
English
DOI:
10.1016/j.astropartphys.2021.102607
URL:
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