New Lensing Time Delays for Direct Measures of the Hubble Constant

Details New Lensing Time Delays for Direct Measures of the Hubble Constant New Lensing Time Delays for Direct Measures of the Hubble Constant

Feb 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000noao.prop..203i&link_type=abstract

NOAO Proposal ID #2000A-0203

Mathematics

Logic

Scientific paper

We propose to use the synoptic observing program of the CTIO 0.9m to measure time delays of 5 two-image gravitational lenses. Gravitational lenses are powerful tools for measuring H_0 on cosmological scales, independent of local distance calibrators. Current measurements of H_0 using gravitational lenses are limited by modeling degeneracies and systematic errors. Measuring time delays of an ensemble of gravitational lenses is the only way to eliminate systematic errors associated with individual objects.

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