Detection of weak gravitational lensing
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David J. Bacon; Alexandre R. Refregier; Richard S. Ellis
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Article
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2000
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John Wiley and Sons
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English
⚖ 693 KB
We report a detection of the coherent distortion of faint galaxies arising from gravitational lensing by foreground structures. This `cosmic shear' is potentially the most direct measure of the mass power spectrum, as it is unaffected by poorly justified assumptions made concerning the biasing of th