Implication of Dark Energy Parametrizations on the Determination of the Curvature of the Universe

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dc.creatorIchikawa, Kazuhide
dc.creatorKawasaki, Masahiro
dc.creatorSekiguchi, Toyokazu
dc.creatorTakahashi, Tomo
dc.date2006-05-19
dc.date2006-05-30
dc.date.accessioned2026-07-07T10:23:07Z
dc.date.available2026-07-07T10:23:07Z
dc.descriptionWe investigate how the nature of dark energy affects the determination of the curvature of the universe from recent observations. For this purpose, we consider the constraints on the matter and dark energy density using observations of type Ia supernovae, baryon acoustic oscillation peak and cosmic microwave background with several types of dark energy equation of state. Although it is usually said that the combination of current observations favors a flat universe, we found that a relatively large parameter space allows the universe to be open for a particular model of dark energy. We also discuss what kind of dark energy model or prior allow a non-flat universe.
dc.description13 pages, 5 figures, added references
dc.identifierhttps://arxiv.org/abs/astro-ph/0605481
dc.identifierhttp://arxiv.org/abs/astro-ph/0605481
dc.identifierJCAP0612:005,2006
dc.identifierdoi:10.1088/1475-7516/2006/12/005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/175715
dc.subjectAstrophysics
dc.titleImplication of Dark Energy Parametrizations on the Determination of the Curvature of the Universe
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