The Sloan Digital Sky Survey Quasar Lens Search. III. Constraints on Dark Energy from the Third Data Release Quasar Lens Catalog

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dc.creatorOguri, Masamune
dc.creatorInada, Naohisa
dc.creatorStrauss, Michael A.
dc.creatorKochanek, Christopher S.
dc.creatorRichards, Gordon T.
dc.creatorSchneider, Donald P.
dc.creatorBecker, Robert H.
dc.creatorFukugita, Masataka
dc.creatorGregg, Michael D.
dc.creatorHall, Patrick B.
dc.creatorHennawi, Joseph F.
dc.creatorJohnston, David E.
dc.creatorKayo, Issha
dc.creatorKeeton, Charles R.
dc.creatorPindor, Bartosz
dc.creatorShin, Min-Su
dc.creatorTurner, Edwin L.
dc.creatorWhite, Richard L.
dc.creatorYork, Donald G.
dc.creatorAnderson, Scott F.
dc.creatorBahcall, Neta A.
dc.creatorBrunner, Robert J.
dc.creatorBurles, Scott
dc.creatorCastander, Francisco J.
dc.creatorChiu, Kuenley
dc.creatorClocchiatti, Alejandro
dc.creatorEisenstein, Daniel
dc.creatorFrieman, Joshua A.
dc.creatorKawano, Yozo
dc.creatorLupton, Robert
dc.creatorMorokuma, Tomoki
dc.creatorRix, Hans-Walter
dc.creatorScranton, Ryan
dc.creatorSheldon, Erin Scott
dc.date2007-08-07
dc.date2007-10-30
dc.date.accessioned2026-07-07T11:41:43Z
dc.date.available2026-07-07T11:41:43Z
dc.descriptionWe present cosmological results from the statistics of lensed quasars in the Sloan Digital Sky Survey (SDSS) Quasar Lens Search. By taking proper account of the selection function, we compute the expected number of quasars lensed by early-type galaxies and their image separation distribution assuming a flat universe, which is then compared with 7 lenses found in the SDSS Data Release 3 to derive constraints on dark energy under strictly controlled criteria. For a cosmological constant model (w=-1) we obtain Ω_Λ=0.74^{+0.11}_{-0.15}(stat.)^{+0.13}_{-0.06}(syst.). Allowing w to be a free parameter we find Ω_M=0.26^{+0.07}_{-0.06}(stat.)^{+0.03}_{-0.05}(syst.) and w=-1.1\pm0.6(stat.)^{+0.3}_{-0.5}(syst.) when combined with the constraint from the measurement of baryon acoustic oscillations in the SDSS luminous red galaxy sample. Our results are in good agreement with earlier lensing constraints obtained using radio lenses, and provide additional confirmation of the presence of dark energy consistent with a cosmological constant, derived independently of type Ia supernovae.
dc.description9 pages, 3 figures, 2 tables, accepted for publication in AJ
dc.identifierhttps://arxiv.org/abs/0708.0825
dc.identifierhttp://arxiv.org/abs/0708.0825
dc.identifierAstron.J.135:512-519,2008
dc.identifierdoi:10.1088/0004-6256/135/2/512
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200634
dc.subjectAstrophysics
dc.titleThe Sloan Digital Sky Survey Quasar Lens Search. III. Constraints on Dark Energy from the Third Data Release Quasar Lens Catalog
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