Curvature tension: Evidence for a closed universe
By Will Handley. 2019
236 citations recorded by the source corpus.
The curvature parameter tension between Planck 2018, cosmic microwave background lensing, and baryon acoustic oscillation data is measured using the suspiciousness statistic to be 2.5 to 3$\sigma$. Conclusions regarding the spatial curvature of the universe which stem from the combination of these data should therefore be viewed with suspicion. Without CMB lensing or BAO, Planck 2018 has a moderate preference for closed universes, with Bayesian betting odds of over 50:1 against a flat universe, and over 2000:1 against an open universe.
Subfields: Astronomy and Astrophysics
View Paper: https://www.semanticscholar.org/paper/32bcd9b8a163eaea359f8fed922fe088f027dd0d
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In Astronomy and Astrophysics
- G. Efstathiou
- Steven Gratton
- A. Benson
- Jeremiah P. Ostriker
- T. Naab
- C. Baugh
- F. V. D. Bosch
- Simon D. M. White
Citations in the corpus
- The Atacama Cosmology Telescope: DR4 maps and cosmological parameters (2020, unknown): “The Planck power spectrum data alone prefer a non-flat model at the 2–3σ significance [6] (see also refs.[70, 71]); this is connected to the deviation from unity of the expected lensing signal (AL) and its significance is reduced with different sky fractions and Planck likelihood choices [72].”
- The evidence for a spatially flat Universe (2020, background): “Park & Ratra (2019) and Handley (2019) reaches qualitatively similar conclusions.”