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A new estimate of the Hubble time with improved modeling of gravitational lenses


Coles, J (2008). A new estimate of the Hubble time with improved modeling of gravitational lenses. Astrophysical Journal, 679(1):17-24.

Abstract

This paper examines free-form modeling of gravitational lenses using Bayesian ensembles of pixelated mass maps. The priors and algorithms from previous work are clarified and significant technical improvements are made. Lens reconstruction and Hubble time recovery are tested using mock data from simple analytic models and recent galaxy formation simulations. Finally, using published data, the Hubble time is inferred through the simultaneous reconstruction of 11 time delay lenses. The result is H0−1 = 13.7−1.0+1.8 Gyr (H0 = 71−8+6 km s−1 Mpc −1).

Abstract

This paper examines free-form modeling of gravitational lenses using Bayesian ensembles of pixelated mass maps. The priors and algorithms from previous work are clarified and significant technical improvements are made. Lens reconstruction and Hubble time recovery are tested using mock data from simple analytic models and recent galaxy formation simulations. Finally, using published data, the Hubble time is inferred through the simultaneous reconstruction of 11 time delay lenses. The result is H0−1 = 13.7−1.0+1.8 Gyr (H0 = 71−8+6 km s−1 Mpc −1).

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute for Computational Science
Dewey Decimal Classification:530 Physics
Language:English
Date:May 2008
Deposited On:16 Feb 2009 15:19
Last Modified:05 Apr 2016 13:00
Publisher:Institute of Physics Publishing
ISSN:0004-637X
Publisher DOI:https://doi.org/10.1086/587635
Related URLs:http://arxiv.org/abs/0802.3219

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