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Gravitational Lensing in Astronomy [PDF]
Deflection of light by gravity was predicted by General Relativity and observationaly confirmed in 1919. In the following decades various aspects of the gravitational lens effect were explored theoretically, among them the possibility of multiple or ring-like images of background sources, the use of lensing as a gravitational telescope on very faint ...
Wambsganss Joachim
doaj +8 more sources
Since Galileo, the arrays of lenses in telescopes have revolutionized the way we see planets, moons, and the universe. Now gravitational lenses made of warped spacetime are helping astronomers peer into the farthest corners of the cosmos.
Choi C.
europepmc +4 more sources
Weak Gravitational Lensing [PDF]
We review theory and applications of weak gravitational lensing. After summarising Friedmann-Lemaitre cosmological models, we present the formalism of gravitational lensing and light propagation in arbitrary space-times. We discuss how weak-lensing effects can be measured.
Matteo Maturi, Matthias Bartelmann
arxiv +7 more sources
The gravitational bending of acoustic Schwarzschild black hole [PDF]
Acoustic black hole is becoming an attractive topic in recent years, for it open-up new direction for experimental/observational explorations of black holes.
Chen-Kai Qiao, Mi Zhou
doaj +2 more sources
Gravitational Lensing of Continuous Gravitational Waves [PDF]
Continuous gravitational waves are analogous to monochromatic light and could therefore be used to detect wave effects such as interference or diffraction. This would be possible with strongly lensed gravitational waves.
Marek Biesiada, Sreekanth Harikumar
doaj +3 more sources
Gravitational lensing has developed into one of the most powerful tools for the analysis of the dark universe. This review summarises the theory of gravitational lensing, its main current applications and representative results achieved so far. It has two parts.
arxiv +5 more sources
The Scales of Gravitational Lensing [PDF]
After exactly a century since the formulation of the general theory of relativity, the phenomenon of gravitational lensing is still an extremely powerful method for investigating in astrophysics and cosmology.
Francesco De Paolis+5 more
doaj +5 more sources
Lensing Point-spread Function of Coherent Astrophysical Sources and Nontrivial Wave Effects [PDF]
Most research on astrophysical lensing has been conducted using the geometric optics framework, where there exists a clear concept of lensing images. However, wave optics effects can be important for coherent sources, e.g., pulsars, fast radio bursts ...
Xun Shi
doaj +2 more sources
Gravitational Lensing from a Spacetime Perspective [PDF]
The theory of gravitational lensing is reviewed from a spacetime perspective, without quasi-Newtonian approximations. More precisely, the review covers all aspects of gravitational lensing where light propagation is described in terms of lightlike ...
Perlick Volker
doaj +2 more sources
Weak Gravitational Lensing [PDF]
This review forms the Weak Lensing part of the Saas-Fee Advanced Course on Gravitational Lensing. It describes the basicsm applications and results of weak lensing. Contents: (1) Introduction (2) The principles of weak gravitational lensing (3) Observational issues and challenges (4) Clusters of galaxies: Introduction, and strong lensing (5) Mass ...
arxiv +3 more sources