02689nam 2200625z- 450 991055710270332120231214133435.0(CKB)5400000000041020(oapen)https://directory.doabooks.org/handle/20.500.12854/69400(EXLCZ)99540000000004102020202105d2020 |y 0engurmn|---annantxtrdacontentcrdamediacrrdacarrierGravitational Lensing and Optical GeometryA Centennial PerspectiveBasel, SwitzerlandMDPI - Multidisciplinary Digital Publishing Institute20201 electronic resource (128 p.)3-03943-286-9 3-03943-287-7 The year 2019 saw the centenary of Eddington's eclipse expeditions and the corroboration of Einstein's general relativity by gravitational lensing. To mark the occasion, a Special Issue of Universe has been dedicated to the theoretical aspects of strong gravitational lensing. The articles assembled in this volume contain original research and reviews and apply a variety of mathematical techniques that have been developed to study this effect, both in 3-space and in spacetime. These include: · Mathematical properties of the standard thin lens approximation, in particular caustics; · Optical geometry, the Gauss–Bonnet method and related approaches; · Lensing in the spacetime of general relativity and modified theories; black hole shadows.Gravitational Lensing and Optical Geometry Research & information: generalbicsscMathematics & sciencebicsscgravitational lensingweak deflectiondark matterGauss–Bonnet theoremblack holewormholestrong gravitational lensingmagnification cross sectionscausticsgravitational lensgeneral relativityultralight particlesblack hole shadowevent horizon telescoperotating black holeglobal monopoleperfect fluidscalar fieldshadowsblack holeswormholesgalaxiesResearch & information: generalMathematics & scienceWerner Marcus Cedt1323014Werner Marcus CothBOOK9910557102703321Gravitational Lensing and Optical Geometry3035322UNINA