Mathematics – Logic
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21725222m&link_type=abstract
American Astronomical Society, AAS Meeting #217, #252.22; Bulletin of the American Astronomical Society, Vol. 43, 2011
Mathematics
Logic
Scientific paper
LSST will discover several thousand lensed quasars and supernovae, and provide high signal-to-noise ratio, well-sampled lightcurves for each. We explore the potential of the expected sample of 400 well-measured 4-image (quad) lens systems for constraining cosmological parameters, via measurements of the "time delay distance" to each one. Based on recent experience with individual lenses studied in great detail with the VLA, Keck and HST, we make plausible assumptions about our likely knowledge of the lens model and lens environment to quantify the largest sources of systematic error, and use simulations of LSST lightcurves to estimate the expected time delay precision. We find that the resulting constraints on the parameters of the Dark Energy equation of state are competitive with and complementary to those from other LSST cosmological probes.
Auger Matthew W.
Fassnacht Chris D.
LSST Strong Lensing Science Collaboration
Marshall Philip J.
Meldgin D. R.
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