New results from the gravitational lensing of galaxies
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495190238-MIT.pdf
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39.35 MB
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899b832698ec16015e0f3e193f541534
Author(s)
Schwab, Josiah (Josiah W.)
Advisor(s)
Saul Rappaport.
Date Issued
2009
Publisher
Massachusetts Institute of Technology
Abstract
We use a sample of 53 elliptical galaxies which are lensing background emission-line galaxies and have been observed by the SLACS collaboration using HST and SDSS to place constraints on the post-Newtonian parameter 7 and the cosmological parameter A. We find y = 1.00 ± 0.04 on kiloparsec scales, consistent with the predictions of general relativity. Assuming a flat universe, we constrain QA = 0.72 ± 0.15, in agreement with results from other independent techniques and strongly excluding h = 0. We also use these lenses as a probe of galactic dynamics, finding constraints which are consistent with those obtained via other methods.
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2009.
Includes bibliographical references (p. 63-65).
Subjects
Physics.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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