Geometrical approach to strong gravitational lensing in f(R) gravity

Journal Article · Sat Jan 15 00:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.024030· OSTI ID:21513075

Nzioki, Anne Marie; Goswami, Rituparno ^[1]; Dunsby, Peter K. S. ^[1]; Carloni, Sante ^[2]

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1. Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch, 7701 (South Africa)
2. Institut d'Estudis Espacials de Catalunya (IEEC), Campus UAB, Facultat Ciencies, Torre C5-Par-2a pl, E-08193 Bellaterra (Barcelona) (Spain)

We present a framework for the study of lensing in spherically symmetric spacetimes within the context of f(R) gravity. Equations for the propagation of null geodesics, together with an expression for the bending angle, are derived for any f(R) theory and then applied to an exact spherically symmetric solution of R{sup n} gravity. We find that for this case more bending is expected for R{sup n} gravity theories in comparison to general relativity and is dependent on the value of n and the value of the distance of closest approach of the incident null geodesic.

• OSTI ID: 21513075
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 2; Other Information: DOI: 10.1103/PhysRevD.83.024030; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPARATIVE EVALUATIONS
GENERAL RELATIVITY THEORY
GEODESICS
GRAVITATION
GRAVITATIONAL LENSES
MATHEMATICAL SOLUTIONS
SPACE-TIME
SYMMETRY
EVALUATION
FIELD THEORIES
LENSES
RELATIVITY THEORY