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dc.contributor.authorBolton, Adam S.
dc.contributor.authorSchwab, J.
dc.contributor.authorRappaport, Saul A
dc.date.accessioned2010-03-17T14:21:20Z
dc.date.available2010-03-17T14:21:20Z
dc.date.issued2010-01
dc.date.submitted2009-07
dc.identifier.issn0004-637X
dc.identifier.urihttp://hdl.handle.net/1721.1/52650
dc.description.abstractGalaxy-scale strong gravitational lenses with measured stellar velocity dispersions allow a test of the weak-field metric on kiloparsec scales and a geometric measurement of the cosmological distance-redshift relation, provided that the mass-dynamical structure of the lensing galaxies can be independently constrained to a sufficient degree. We combine data on 53 galaxy-scale strong lenses from the Sloan Lens ACS Survey with a well-motivated fiducial set of lens-galaxy parameters to find (1) a constraint on the post-Newtonian parameter γ = 1.01 ± 0.05, and (2) a determination of ΩΛ = 0.75 ± 0.17 under the assumption of a flat universe. These constraints assume that the underlying observations and priors are free of systematic error. We evaluate the sensitivity of these results to systematic uncertainties in (1) total mass-profile shape, (2) velocity anisotropy, (3) light-profile shape, and (4) stellar velocity dispersion. Based on these sensitivities, we conclude that while such strong-lens samples can, in principle, provide an important tool for testing general relativity and cosmology, they are unlikely to yield precision measurements of γ and Ω[subscript Λ] unless the properties of the lensing galaxies are independently constrained with substantially greater accuracy than at present.en
dc.language.isoen_US
dc.publisherAmerican Astronomical Societyen
dc.relation.isversionofhttp://dx.doi.org/10.1088/0004-637X/708/1/750en
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en
dc.sourceS. Rappaporten
dc.titleGALAXY-SCALE STRONG-LENSING TESTS OF GRAVITY AND GEOMETRIC COSMOLOGY: CONSTRAINTS AND SYSTEMATIC LIMITATIONSen
dc.typeArticleen
dc.identifier.citationRappaport, Saul A., Adam S. Bolton, and Josiah Schwab. “GALAXY-SCALE STRONG-LENSING TESTS OF GRAVITY AND GEOMETRIC COSMOLOGY: CONSTRAINTS AND SYSTEMATIC LIMITATIONS*.” The Astrophysical Journal 708.1: 750-757. © 2010 The American Astronomical Societyen
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.departmentMIT Kavli Institute for Astrophysics and Space Researchen_US
dc.contributor.approverRappaport, Saul A.
dc.contributor.mitauthorSchwab, Josiah
dc.contributor.mitauthorRappaport, Saul A.
dc.relation.journalAstrophysical Journalen
dc.eprint.versionFinal published versionen
dc.type.urihttp://purl.org/eprint/type/JournalArticleen
eprint.statushttp://purl.org/eprint/status/PeerRevieweden
dspace.orderedauthorsSchwab, Josiah; Bolton, Adam S.; Rappaport, Saul A.en
dc.identifier.orcidhttps://orcid.org/0000-0003-3182-5569
mit.licenseOPEN_ACCESS_POLICYen


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