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Exact gravitational lensing in conformal gravity and Schwarzschild-de Sitter spacetime.
- Source :
-
Physical Review D: Particles, Fields, Gravitation & Cosmology . 1/15/2017, Vol. 95 Issue 2, p1-1. 1p. - Publication Year :
- 2017
-
Abstract
- An exact solution is obtained for the gravitational bending of light in static, spherically symmetric metrics which includes the Schwarzschild-de Sitter spacetime and also the Mannheim-Kazanas metric of conformal Weyl gravity. From the exact solution, we obtain a small-bending-angle approximation for a lens system where the source, lens, and observer are coaligned. This expansion improves previous calculations where we systematically avoid parameter ranges that correspond to nonexistent null trajectories. The linear coefficient γ characteristic to conformal gravity is shown to contribute enhanced deflection compared to the angle predicted by general relativity for small γ. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 24700010
- Volume :
- 95
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Physical Review D: Particles, Fields, Gravitation & Cosmology
- Publication Type :
- Periodical
- Accession number :
- 121200566
- Full Text :
- https://doi.org/10.1103/PhysRevD.95.024004