The Hubble Time Inferred from 10 Time Delay Lenses
Prasenjit SahaAstronomy Unit, Queen Mary and Westfield College, University of London, London E1 4NS, UKJonathan ColesInstitute for Theoretical Physics, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, SwitzerlandAndrea V. MacciòInstitute for Theoretical Physics, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, SwitzerlandLiliya L. R. WilliamsDepartment of Astronomy, University of Minnesota, 116 Church Street, SE, Minneapolis, MN 55455
2006en
ABI
Abstract
We present a simultaneous analysis of 10 galaxy lenses having time-delay measurements. For each lens we derive a detailed free-form mass map, with uncertainties, and with the additional requirement of a shared value of the Hubble parameter across all the lenses. We test the prior involved in the lens reconstruction against a galaxy-formation simulation. Assuming a concordance cosmology, we obtain 1/H_0 = 13.5 (+2.5/-1.3) Gyr
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Cited by 20 references