Gravitational Lensing and Optical Geometry A Centennial Perspective

• Format: eBook
• Language: English
• Published: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute 2020
• Subjects: black hole; black hole shadow; black holes; caustics; dark matter; event horizon telescope; galaxies; Gauss–Bonnet theorem; general relativity; global monopole; gravitational lens; gravitational lensing; magnification cross sections; Mathematics and Science; perfect fluid; Reference, Information and Interdisciplinary subjects; Research and information: general; rotating black hole; scalar field; shadows; strong gravitational lensing; ultralight particles; weak deflection; wormhole; wormholes
• ISBN: 9783039432868; 3039432869; 9783039432875; 3039432877
• DOI: 10.3390/books978-3-03943-287-5

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.