Precision cosmological measurements: independent evidence for dark energy

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dc.creatorBothun, Greg
dc.creatorHsu, Stephen D. H.
dc.creatorMurray, Brian
dc.date2006-12-04
dc.date2008-01-04
dc.date.accessioned2026-07-07T11:20:49Z
dc.date.available2026-07-07T11:20:49Z
dc.descriptionUsing recent precision measurements of cosmological paramters, we re-examine whether these observations alone, independent of type Ia supernova surveys, are sufficient to imply the existence of dark energy. We find that best measurements of the age of the universe $t_0$, the Hubble parameter $H_0$ and the matter fraction $Ω_m$ strongly favor an equation of state defined by ($w < -1/3$). This result is consistent with the existence of a repulsive, acceleration-causing component of energy if the universe is nearly flat.
dc.description5 pages, revtex, 3 figures. Minor additions. Version to appear in Physics Letters B
dc.identifierhttps://arxiv.org/abs/astro-ph/0612106
dc.identifierhttp://arxiv.org/abs/astro-ph/0612106
dc.identifierPhys.Lett.B660:133-137,2008
dc.identifierdoi:10.1016/j.physletb.2008.01.001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/194079
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titlePrecision cosmological measurements: independent evidence for dark energy
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