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Curvature tension: evidence for a closed universe

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arxiv 1908.09139 v1 pith:IUE3QLR7 submitted 2019-08-24 astro-ph.CO gr-qc

classification astro-ph.COgr-qc
keywords universecurvaturecloseddatalensingplancktensionacoustic
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

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.

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Cited by 8 Pith papers

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