Results 1 to 10 of about 236,146 (270)
Weak Gravitational Lensing of Finite Beams [PDF]
Physical Review Letters, 2017 The standard theory of weak gravitational lensing relies on the infinitesimal light beam approximation. In this context, images are distorted by convergence and shear, the respective sources of which unphysically depend on the resolution of the ...
Pierre Fleury +2 more
core +6 more sources
The gravitational bending of acoustic Schwarzschild black hole [PDF]
European Physical Journal C: Particles and Fields, 2023 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
Weak gravitational lensing by voids [PDF]
, 1999 We consider the prospects for detecting weak gravitational lensing by underdensities (voids) in the large-scale matter distribution. We derive the basic expressions for magnification and distortion by spherical voids. Clustering of the background sources
Luca Amendola, J. Frieman, I. Waga
openalex +4 more sources
Image simulations for strong and weak gravitational lensing [PDF]
arXiv, 2020 Gravitational lensing has been identified as a powerful tool to address fundamental problems in astrophysics at different scales, ranging from exoplanet identification to dark energy and dark matter characterization in cosmology. Image simulations have played a fundamental role in the realization of the full potential of gravitational lensing by ...
A. Plazas
arxiv +3 more sources
Resource Letter: Gravitational Lensing [PDF]
, 2012 This Resource Letter provides a guide to a selection of the literature on gravitational lensing and its applications. Journal articles, books, popular articles, and websites are cited for the following topics: foundations of gravitational lensing, foundations of cosmology, history of gravitational lensing, strong lensing, weak lensing, and microlensing.
Clowe, D., Marshall, P. J., Treu, T.
arxiv +3 more sources
Shadow revisiting and weak gravitational lensing with Chern-Simons modification [PDF]
Physics Letters B, 2023 Dynamical Chern-Simons (dCS) gravity has been attracting plenty of attentions due to the fact that it is a parity-violating modified theory of gravity that corresponds to a well-posed effective field theory in weak coupling approximation.
Yuan Meng +3 more
doaj +2 more sources
Weak gravitational lensing Schwarzschild-MOG black hole in plasma
European Physical Journal C: Particles and Fields, 2021 This paper is devoted to study weak gravitational lensing properties around black hole surrounded plasma medium in modified gravity (MOG). We have investigated the effects of the MOG-parametr and plasma medium on the deflection angle and total ...
Farruh Atamurotov +2 more
doaj +2 more sources
Cosmological model differentiation through weak gravitational lensing [PDF]
, 2002 We investigate the potential of weak gravitational lensing maps to differentiate between distinct cosmological models, considering cosmic variance due to a limited map extension and the presence of noise.
Antonio C. C. Guimarães
openalex +5 more sources
Weak Gravitational Lensing [PDF]
, 2005 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 ...
Schneider, Peter
arxiv +3 more sources
The Ray Bundle method for calculating weak magnification by gravitational lenses [PDF]
, 1998 We present here an alternative method for calculating magnifications in gravitational lensing calculations -- the Ray Bundle method. We provide a detailed comparison between the distribution of magnifications obtained compared with analytic results and conventional ray-shooting methods.
C. J. Fluke +24 more
arxiv +5 more sources