What is recorded here?
Suyu and colleagues combined earlier measured time delays in the four-image lens B1608+656 with Hubble imaging, a new lens-galaxy velocity-dispersion measurement and an environment model. Their Bayesian analysis quantified how the density profile and matter along the line of sight affect a time-delay distance and cosmological inferences.
Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.
Scientific scope
For the specified fixed cosmology and their preferred imaging and external-convergence priors, the 2009 preprint reports H0 = 70.6 ± 3.1 km s−1 Mpc−1. This is not an assumption-free measurement: the central value and precision change under alternative external-convergence priors, and the result relies on lens and stellar-dynamics models, simulations and prior choices. The separate result H0 = 69.7 +4.9/−5.0 combines the lens with WMAP5 under flatness and a constant variable equation-of-state parameter. The original lens discovery, earlier time-delay measurements and 1964 time-delay concept are distinct earlier contributions; the study uses a single lens, not a sample of independently measured systems.
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People and systems
S. H. Suyu; P. J. Marshall; M. W. Auger; S. Hilbert; R. D. Blandford; L. V. E. Koopmans; C. D. Fassnacht; T. Treu
These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.
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English catalogue narrative
A lens time-delay and stellar-dynamics analysis constrains the Hubble constant
Suyu and colleagues combined earlier measured time delays in the four-image lens B1608+656 with Hubble imaging, a new lens-galaxy velocity-dispersion measurement and an environment model. Their Bayesian analysis quantified how the density profile and matter along the line of sight affect a time-delay distance and cosmological inferences.
Scientific scope
For the specified fixed cosmology and their preferred imaging and external-convergence priors, the 2009 preprint reports H0 = 70.6 ± 3.1 km s−1 Mpc−1. This is not an assumption-free measurement: the central value and precision change under alternative external-convergence priors, and the result relies on lens and stellar-dynamics models, simulations and prior choices. The separate result H0 = 69.7 +4.9/−5.0 combines the lens with WMAP5 under flatness and a constant variable equation-of-state parameter. The original lens discovery, earlier time-delay measurements and 1964 time-delay concept are distinct earlier contributions; the study uses a single lens, not a sample of independently measured systems.
Reading status
This is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.
People and systems
S. H. Suyu; P. J. Marshall; M. W. Auger; S. Hilbert; R. D. Blandford; L. V. E. Koopmans; C. D. Fassnacht; T. Treu
These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.