How to Measure the Cosmic Curvature

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dc.creatorGu, Ying-Qiu
dc.creatorKhlopov, M. Yu.
dc.date2007-01-09
dc.date2008-02-17
dc.date.accessioned2026-07-07T09:21:01Z
dc.date.available2026-07-07T09:21:01Z
dc.descriptionThe conventional method to determine the cosmic curvature is to measure the total mass density $Ω_{\rm tot}$. Unfortunately the observational $Ω_{\rm tot}$ is closely near the critical value 1. The computation of this paper shows that $Ω_{\rm tot}\approx 1$ is an inevitable result for the young universe independent of the spatial topology. So the mass density is not a good criterion to determine the cosmic curvature. In this paper, we derive a new criterion based on the galactic distribution with respect to redshift $z$, which only depends on the cosmological principle and geometry. The different type of spatial topology will give different results, then the case can be definitely determined.
dc.description10 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/gr-qc/0701050
dc.identifierhttp://arxiv.org/abs/gr-qc/0701050
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/154880
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.titleHow to Measure the Cosmic Curvature
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