5–10 Jul 2021
Europe/Rome timezone

A Morse-theoretical analysis of gravitational lensing by rotating traversable wormhole

6 Jul 2021, 11:30
20m
Talk in the parallel session Gravitational Lensing and Shadows Gravitational Lensing and Shadows

Speaker

Mourad Halla (ZARM, University of Bremen)

Description

Consider, in the domain of wormhole, a point p (observation event) and a timelike curve γ (worldline of light source).
We prove that for infinitely many positive integers κ there is a past-pointing lightlike geodesic λκ of Morse index κ from p to γ , hence an observer at p sees infinitely many images of γ.

We will show that in the rotating traversable wormhole the occurrence of infinitely many images is intimately related to the occurrence of centrifugal-plus-Coriolis force reversal.

Primary authors

Mourad Halla (ZARM, University of Bremen) Dr Volker Perlick (ZARM, University of Bremen)

Presentation materials

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