# Weak gravitational lensing

@article{Bartelmann2017WeakGL, title={Weak gravitational lensing}, author={Matthias Bartelmann and Matteo Maturi}, journal={Scholarpedia}, year={2017}, volume={12}, pages={32440} }

Abstract 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. The formalism is then applied to reconstructions of galaxy-cluster mass distributions, gravitational lensing by large-scale matter distributions, QSO–galaxy correlations induced by weak lensing, lensing of galaxies…

## 539 Citations

### Cluster–galaxy weak lensing

- Physics
- 2020

Weak gravitational lensing of background galaxies provides a direct probe of the projected matter distribution in and around galaxy clusters. Here, we present a self-contained pedagogical review of…

### Instrumental systematics and weak gravitational lensing

- Physics
- 2015

We present a pedagogical review of the weak gravitational lensing measurement process and its connection to major scientific questions such as dark matter and dark energy. Then we describe common…

### Probabilistic Cosmological Mass Mapping from Weak Lensing Shear

- Physics
- 2016

We infer gravitational lensing shear and convergence fields from galaxy ellipticity catalogs under a spatial process prior for the lensing potential. We demonstrate the performance of our algorithm…

### Cosmic convergence and shear with extended sources

- PhysicsPhysical Review D
- 2019

The standard theory of weak gravitational lensing relies on the approximation that light beams are infinitesimal. Our recent work showed that the finite size of sources, and the associated light…

### Full-sky weak lensing: a nonlinear post-Friedmann treatment

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2019

We present a full-sky derivation of weak lensing observables in the Post-Friedmann (PF) formalism. Weak lensing has the characteristic of mixing small scales and large scales since it is affected by…

### RCSLenS: testing gravitational physics through the cross-correlation of weak lensing and large-scale structure

- Physics
- 2016

The unknown nature of ‘dark energy’ motivates continued cosmological tests of large-scale gravitational physics. We present a new consistency check based on the relative amplitude of non-relativistic…

### Gravitational lensing in the strong field limit by modified gravity

- Physics
- 2016

An investigation of the strong gravitational lensing in specific model of modified gravity is presented. It is shown that a slight modification to the general relativistic metric near the…

### Probing the theory of gravity with gravitational lensing of gravitational waves and galaxy surveys

- Physics, GeologyMonthly Notices of the Royal Astronomical Society
- 2020

The cross-correlation of gravitational wave strain with upcoming galaxy surveys probes theories of gravity in a new way. This method enables testing the theory of gravity by combining the effects…

### Weak lensing in the Horizon-AGN simulation lightcone

- PhysicsAstronomy & Astrophysics
- 2019

Context. Accurate model predictions including the physics of baryons are required to make the most of the upcoming large cosmological surveys devoted to gravitational lensing. The advent of…

### Primordial gravitational waves from galaxy intrinsic alignments

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2020

Galaxy shapes have been observed to align with external tidal fields generated by the large-scale structures of the Universe. While the main source for these tidal fields is provided by…

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