dc.contributor.author | Bolton, Adam S. | |
dc.contributor.author | Schwab, J. | |
dc.contributor.author | Rappaport, Saul A | |
dc.date.accessioned | 2010-03-17T14:21:20Z | |
dc.date.available | 2010-03-17T14:21:20Z | |
dc.date.issued | 2010-01 | |
dc.date.submitted | 2009-07 | |
dc.identifier.issn | 0004-637X | |
dc.identifier.uri | http://hdl.handle.net/1721.1/52650 | |
dc.description.abstract | Galaxy-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.iso | en_US | |
dc.publisher | American Astronomical Society | en |
dc.relation.isversionof | http://dx.doi.org/10.1088/0004-637X/708/1/750 | en |
dc.rights | Article 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.source | S. Rappaport | en |
dc.title | GALAXY-SCALE STRONG-LENSING TESTS OF GRAVITY AND GEOMETRIC COSMOLOGY: CONSTRAINTS AND SYSTEMATIC LIMITATIONS | en |
dc.type | Article | en |
dc.identifier.citation | Rappaport, 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 Society | en |
dc.contributor.department | Massachusetts Institute of Technology. Department of Physics | en_US |
dc.contributor.department | MIT Kavli Institute for Astrophysics and Space Research | en_US |
dc.contributor.approver | Rappaport, Saul A. | |
dc.contributor.mitauthor | Schwab, Josiah | |
dc.contributor.mitauthor | Rappaport, Saul A. | |
dc.relation.journal | Astrophysical Journal | en |
dc.eprint.version | Final published version | en |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en |
dspace.orderedauthors | Schwab, Josiah; Bolton, Adam S.; Rappaport, Saul A. | en |
dc.identifier.orcid | https://orcid.org/0000-0003-3182-5569 | |
mit.license | OPEN_ACCESS_POLICY | en |
mit.metadata.status | Complete | |