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Applications of Gravitational Lensing in Cosmology
[chapter]
Springer Praxis Books
Gravitational lensing originates from the deflection of light by masses, irrespective of their physical state or composition. Since it appears inescapable that most of the matter in the universe is dark, gravitational lensing has developed into one of the primary tools to learn about the amount, composition and distribution of masses in the universe. The review will summarise the theory of gravitational lensing, starting from Fermat's principle. This will first be applied to isolated lenses
doi:10.1007/3-540-30313-8_7
fatcat:jh36n3oadzdhlee6qzwidmjtba