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Cited by 454Cosmology and Gravitation TheoriesGalaxies: Formation, Evolution, PhenomenaAstrophysical Phenomena and Observations

The DOI matches its Crossref record; 80 of the 80 references it cites were found in a registry or an index.

DISSECTING THE GRAVITATIONAL LENS B1608+656. II. PRECISION MEASUREMENTS OF THE HUBBLE CONSTANT, SPATIAL CURVATURE, AND THE DARK ENERGY EQUATION OF STATE

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Suyu, S. H., Marshall, P. J., Auger, M. W., Hilbert, S., Blandford, R. D., Koopmans, L. V. E., Fassnacht, C. D., Treu, T.·2010·The Astrophysical Journal
DOI 10.1088/0004-637x/711/1/201
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Abstract

Strong gravitational lens systems with measured time delays between the multiple images provide a method for measuring the "time-delay distance" to the lens, and thus the Hubble constant. We present a Bayesian analysis of the strong gravitational lens system B1608+656, incorporating (1) new, deep Hubble Space Telescope ( HST ) observations, (2) a new velocity-dispersion measurement of 260 ± 15 km s −1 for the primary lens galaxy, and (3) an updated study of the lens' environment. Our analysis of the HST images takes into account the extended source surface brightness, and the dust extinction and optical emission by the interacting lens galaxies. When modeling the stellar dynamics of the primary lens galaxy, the lensing effect, and the environment of the lens, we explicitly include the total mass distribution profile logarithmic slope γ' and the external convergence κ ext ; we marginalize over these parameters, assigning well-motivated priors for them, and so turn the major systematic errors into statistical ones. The HST images provide one such prior, constraining the lens mass density profile logarithmic slope to be γ' = 2.08 ± 0.03; a combination of numerical simulations and photometric observations of the B1608+656 field provides an estimate of the prior for κ ext : 0.10 +0.08 −0.05 . This latter distribution dominates the final uncertainty on H 0 . Fixing the cosmological parameters at Ω m = 0.3, Ω Λ = 0.7, and w = −1 in order to compare with previous work on this system, we find H 0 = 70.6 +3.1 −3.1 km s −1 Mpc −1 . The new data provide an increase in precision of more than a factor of 2, even including the marginalization over κ ext . Relaxing the prior probability density function for the cosmological parameters to that derived from the Wilkinson Microwave Anisotropy Probe ( WMAP ) five-year data set, we find that the B1608+656 data set breaks the degeneracy between Ω m and Ω Λ at w = −1 and constrains the curvature parameter to be −0.031 < Ω k < 0.009 (95% CL), a level of precision comparable to that afforded by the current Type Ia SNe sample. Asserting a flat spatial geometry, we find that, in combination with WMAP , H 0 = 69.7 +4.9 −5.0 km s −1 Mpc −1 and w = −0.94 +0.17 −0.19 (68% CL), suggesting that the observations of B1608+656 constrain w as tightly as the current Baryon Acoustic Oscillation data do.

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Research works printed but not linked: 10

  1. Binney, 1987, Galactic dynamics, 747
  2. Fadely, 2009, ApJ
  3. Fassnacht, 2009, MNRAS
  4. Hu, 2005, Observing Dark Energy, 215
  5. MacKay, 2003, Information Theory, Inference and Learning Algorithms
  6. McKean, 2009, MNRAS
  7. Osipkov, 1979, Pis'ma Astron. Zh., 5, 77
  8. Schneider, 2006, Gravitational Lensing: Strong, Weak and Micro
  9. Sivia, 1996, Data Analysis: A Bayesian Tutorial
  10. Tammann, 1979, IAU Coll. 54, Scientific Research with the Space Telescope, 263

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Metadata

Authors
Suyu, S. H., Marshall, P. J., Auger, M. W., Hilbert, S., Blandford, R. D., Koopmans, L. V. E., Fassnacht, C. D., & Treu, T.
Affiliations
  • University of Bonn (DE)
  • University of California, Santa Barbara (US)
  • Kavli Institute for Particle Astrophysics and Cosmology (US)
  • University of Groningen (NL)
  • University of California, Davis (US)
Corresponding author
Suyu, S. H.
ORCID
Venue
The Astrophysical Journal
Publisher
American Astronomical Society
Published
2010-02-10
Volume
711
Issue
1
Pages
201-221
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
DOI
10.1088/0004-637x/711/1/201
OpenAlex
W2143112358
Cited by
454
References
80
Citations by year
2026: 19 · 2025: 39 · 2024: 32 · 2023: 26 · 2022: 29 · 2021: 22 · 2020: 30 · 2019: 34 · 2018: 25 · 2017: 24 · 2016: 37 · 2015: 28 · 2014: 16 · 2013: 29 · 2012: 23
FWCI
16.62
Type
journal article
Language
en
Open access
Locations
  • The Astrophysical Journal (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • University of Groningen research database (University of Groningen / Centre for Information Technology) (submittedVersion, other-oa)
  • arXiv (Cornell University)
Funders
  • National Science Foundation (0444059, 0642621, DE-AC02-76SF00515, CAREER, NAS 5-26555)
  • U.S. Department of Energy (76SF00515, DE–AC02–76SF00515, AC02‐76SF00515, NAS 5-26555, DE-AC02-)
  • National Aeronautics and Space Administration (NAS 526555, 526555)
  • Alfred P. Sloan Foundation
  • Space Telescope Science Institute (NAS5- 26555, 5-26555, 26555)
  • Deutsche Forschungsgemeinschaft (DE-AC02-76SF00515, NAS 5-26555)
  • Nederlandse Organisatie voor Wetenschappelijk Onderzoek (10158)
  • Science and Technology Facilities Council (ST/H00243X/1)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astrophysical Phenomena and Observations
Keywords
strong gravitational lensing, Hubble constant, time-delay distance, dark energy equation of state, spatial curvature, lens mass profile, external convergence, velocity dispersion, interstellar extinction, cosmological parameter constraints, Bayesian analysis

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