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Observational constraints on non-flat dynamical dark energy cosmological models

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arxiv 1308.0834 v2 pith:W6GHRN7K submitted 2013-08-04 astro-ph.CO gr-qc

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

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abstract

We constrain two non-flat time-evolving dark energy cosmological models by using Hubble parameter data, Type Ia supernova apparent magnitude measurements, and baryonic acoustic oscillation peak length scale observations. The inclusion of space curvature as a free parameter in the analysis results in a significant broadening of the allowed range of values of the parameter that governs the time evolution of the dark energy density in these models. While consistent with the "standard" spatially-flat $\Lambda$CDM cosmological model, these data are also consistent with a range of mildly non-flat, slowly time-varying dark energy models. After marginalizing over all other parameters, these data require the averaged magnitude of the curvature density parameter $|\Omega_{k0}| \lesssim 0.15$ at 1$\sigma$ confidence.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Updated observational constraints on $\phi$CDM dynamical dark energy cosmological models

    astro-ph.CO 2025-09 conditional novelty 5.0 of 10

    Updated φCDM constraints from Planck 2018 + non-CMB data find α=0.055±0.041, consistent with a cosmological constant and only mildly favoring evolving quintessence.

  2. Using SPTpol, Planck 2015, and non-CMB data to constrain tilted spatially-flat and untilted non-flat $\Lambda$CDM, XCDM, and $\phi$CDM dark energy inflation cosmologies

    astro-ph.CO 2019-08 conditional novelty 5.0 of 10

    Joint constraints from SPTpol, Planck 2015, and non-CMB data in six dark energy cosmologies find no strong data tension and continue to favor spatially closed universes over flat ones.

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