Journal article
The Sloan Digital Sky Survey Quasar Lens Search. III. Constraints on Dark Energy from the Third Data Release Quasar Lens Catalog
The Astronomical journal, v 135(2), pp 512-519
07 Aug 2007
Abstract
Astron.J.135:512-519,2008 We 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
\Omega_\Lambda=0.74^{+0.11}_{-0.15}(stat.)^{+0.13}_{-0.06}(syst.). Allowing w
to be a free parameter we find
\Omega_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.
Metrics
Details
- Title
- The Sloan Digital Sky Survey Quasar Lens Search. III. Constraints on Dark Energy from the Third Data Release Quasar Lens Catalog
- Creators
- Masamune OguriNaohisa InadaMichael A StraussChristopher S KochanekGordon T RichardsDonald P SchneiderRobert H BeckerMasataka FukugitaMichael D GreggPatrick B HallJoseph F HennawiDavid E JohnstonIssha KayoCharles R KeetonBartosz PindorMin-Su ShinEdwin L TurnerRichard L WhiteDonald G YorkScott F AndersonNeta A BahcallRobert J BrunnerScott BurlesFrancisco J CastanderKuenley ChiuAlejandro ClocchiattiDaniel EisensteinJoshua A FriemanYozo KawanoRobert LuptonTomoki MorokumaHans-Walter RixRyan ScrantonErin Scott Sheldon
- Publication Details
- The Astronomical journal, v 135(2), pp 512-519
- Publisher
- Institute of Physics (IOP)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000253039700005
- Scopus ID
- 2-s2.0-42149117361
- Other Identifier
- 991014878332804721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Astronomy & Astrophysics