Strong gravitational lensing—a probe for extra dimensions and Kalb-Ramond field

Journal Article · Sat Jul 01 04:00:00 EDT 2017 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2017/07/045· OSTI ID:22676083

Chakraborty, Sumanta; SenGupta, Soumitra ^[1]

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1. Department of Theoretical Physics, Indian Association for the Cultivation of Science, 2A and 2B Raja S.C. Mullick Road, Kolkata 700032 (India)

Strong field gravitational lensing in the context of both higher spacetime dimensions and in presence of Kalb-Ramond field have been studied. After developing proper analytical tools to analyze the problem we consider gravitational lensing in three distinct black hole spacetimes—(a) four dimensional black hole in presence of Kalb-Ramond field, (b) brane world black holes with Kalb-Ramond field and finally (c) black hole solution in f ( T ) gravity. In all the three situations we have depicted the behavior of three observables: the asymptotic position approached by the relativistic images, the angular separation and magnitude difference between the outermost images with others packed inner ones, both numerically and analytically. Difference between these scenarios have also been discussed along with possible observational signatures.

• OSTI ID: 22676083
• Journal Information: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 07 Vol. 2017; ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ASYMPTOTIC SOLUTIONS
BLACK HOLES
BRANES
FOUR-DIMENSIONAL CALCULATIONS
GLOBAL ASPECTS
GRAVITATIONAL FIELDS
GRAVITATIONAL LENSES
RELATIVISTIC RANGE
SPACE-TIME