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

## Abstract

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.

- Authors:

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

- Publication Date:

- OSTI Identifier:
- 22676083

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2017; Journal Issue: 07; Other Information: Country of input: International Atomic Energy Agency (IAEA)

- Country of Publication:
- United States

- Language:
- English

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

### Citation Formats

```
Chakraborty, Sumanta, and SenGupta, Soumitra, E-mail: sumantac.physics@gmail.com, E-mail: tpssg@iacs.res.in.
```*Strong gravitational lensing—a probe for extra dimensions and Kalb-Ramond field*. United States: N. p., 2017.
Web. doi:10.1088/1475-7516/2017/07/045.

```
Chakraborty, Sumanta, & SenGupta, Soumitra, E-mail: sumantac.physics@gmail.com, E-mail: tpssg@iacs.res.in.
```*Strong gravitational lensing—a probe for extra dimensions and Kalb-Ramond field*. United States. doi:10.1088/1475-7516/2017/07/045.

```
Chakraborty, Sumanta, and SenGupta, Soumitra, E-mail: sumantac.physics@gmail.com, E-mail: tpssg@iacs.res.in. Sat .
"Strong gravitational lensing—a probe for extra dimensions and Kalb-Ramond field". United States.
doi:10.1088/1475-7516/2017/07/045.
```

```
@article{osti_22676083,
```

title = {Strong gravitational lensing—a probe for extra dimensions and Kalb-Ramond field},

author = {Chakraborty, Sumanta and SenGupta, Soumitra, E-mail: sumantac.physics@gmail.com, E-mail: tpssg@iacs.res.in},

abstractNote = {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.},

doi = {10.1088/1475-7516/2017/07/045},

journal = {Journal of Cosmology and Astroparticle Physics},

number = 07,

volume = 2017,

place = {United States},

year = {Sat Jul 01 00:00:00 EDT 2017},

month = {Sat Jul 01 00:00:00 EDT 2017}

}