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Gravitational lenses

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This book contains a complete and up-to-date review of gravitational lensing, focussing on recent progress in both observations and theory. The mapping of dark matter on galaxy and cluster sized scales, as will be seen through the future eyes of ALMA, is discussed. The lensing of quasars is presented as a method for measuring cosmological parameters and recent observations and modeling are examined. In the regime of weak gravitational lensing numerous results are now available and are compared with simulations at different length-scales. The use of weak lensing around isolated galaxies to measure the shape of galaxy halos is studied. Absorption lines of lensed quasars can be used to map the occulting systems out to a redshift of 2 and this technique is investigated. This book is designed for researchers and graduate students interested in any research area of gravitational lensing.

Gravitational lenses. --- Lentilles gravitationnelles.

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Cosmology --- Gravitational lenses --- Radio astronomy

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Gravitational lensing is a consequence of general relativity, where the gravitational force due to a massive object bends the paths of light originating from distant objects lying behind it. Using very little general relativity and no higher level mathematics, this text presents the basics of gravitational lensing, focusing on the equations needed to understand the phenomena. It then applies them to a diverse set of topics, including multiply imaged objects, time delays, extrasolar planets, microlensing, cluster masses, galaxy shape measurements, cosmic shear, and lensing of the cosmic microwave background. This approach allows undergraduate students and others to get quickly up to speed on the basics and the important issues. The text will be especially relevant as large surveys such as LSST and Euclid begin to dominate the astronomical landscape. Designed for a one semester course, it is accessible to anyone with two years of undergraduate physics background..

Gravitational lenses. --- Gravitational lenses --- Lentilles gravitationnelles --- Lentilles gravitationnelles --- Mathematics. --- Mathématiques.

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BLACK HOLES --- GENERAL RELATIVITY --- GRAVITATIONAL LENSES --- POPULAR WORKS