A New Estimate of Hubble's Constant from the Gravitational Lens PKS 1830-211

Details A New Estimate of Hubble's Constant from the Gravitational Lens PKS 1830-211 A New Estimate of Hubble's Constant from the Gravitational Lens PKS 1830-211

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...19310809j&link_type=abstract

American Astronomical Society, 193rd AAS Meeting, #108.09; Bulletin of the American Astronomical Society, Vol. 30, p.1416

Astronomy and Astrophysics

Astronomy

Scientific paper

We have examined published NICMOS images of the field containing the radio Einstein ring PKS 1830-211 and have tentatively identified the location of the second, lower redshift intervening galaxy discovered by radio absorption line observations. The lower redshift galaxy is much closer to the NE compact radio component than to the SW component, consistent with the more extended and distorted VLBI morphology of the NE component. We estimate the additional contribution of the lower redshift galaxy to the observed differential time delay between the NE and SW images, and use this to correct estimates of H0 based on single lens models for this system. This research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.

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