The time delay in strong gravitational lensing with Gauss-Bonnet correction

Abstract

The time delay between two relativistic images in the strong gravitational lensing governed by Gauss-Bonnet gravity is studied. We derive and calculate the expression of time delay due to the Gauss-Bonnet coupling. It is shown that the time delay for two images with larger space each other is longer. We also find that the ratio of Gauss-Bonnet coefficient and the mass of gravitational source changes in the region like $\frac{\alpha }{M}\in [0,2)$. The time delay is divergent with $\frac{\alpha }{M}⟶2$.

9 pages, 1 figure

References in corpus (3)

• Strong field gravitational lensing in the deformed Hǒrava-Lifshitz black hole
• Braneworld black hole gravitational lens: Strong field limit analysis
• Kaluza-Klein black hole with negatively curved extra dimensions in string generated gravity models

Cited by in corpus (2)

• Parameters estimation and strong gravitational lensing of nonsingular Kerr-Sen black holes
• Weak deflection angle by Casimir wormhole using Gauss-bonnet theorem and its shadow