Mathematics – Logic
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21460317c&link_type=abstract
American Astronomical Society, AAS Meeting #214, #603.17
Mathematics
Logic
Scientific paper
Future large ensembles of time delay lenses have the potential to constrain cosmology almost as well as other planned "Stage IV" experiments (weak lensing, supernovae, baryon acoustic oscillations, and cluster counts). Current constraints from 10-16 time delay lenses already yield the Hubble constant (h) in agreement with and to roughly the same level of precision (10%) as the HST Key Project which analyzed 40 Cepheids. Future surveys (Pan-STARRS, LSST, JDEM / IDECS, SKA, OMEGA) will yield hundreds or even thousands of lenses with well-measured time delays. This will yield more precise determination of h and enable constraints to be placed on the other cosmological parameters. We present the first full analysis of the constraints possible on (h, Omegam, Omegade, w0, wa) from large ensembles of time delay lenses. As with any method, there are systematics we must learn to control, and we discuss these issues.
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