Lensing and imaging by a stealth defect of spacetime

TL;DR

This paper investigates the gravitational lensing effects caused by a stealth defect in spacetime, analyzing geodesics and image formation in a flat spacetime context, with implications for curved spacetime cases.

Contribution

It introduces the geodesic structure and lensing characteristics of a simple flat spacetime stealth defect, providing insights into their potential observational signatures.

Findings

Stealth defect causes distinctive lensing patterns.

Geodesic analysis reveals how light paths are affected.

Results suggest similar effects may occur in curved spacetime defects.

Abstract

We obtain the geodesics for the simplest possible stealth defect which has a flat spacetime. We, then, discuss the lensing properties of such a defect, and the corresponding image formation. Similar lensing properties can be expected to hold for curved-spacetime stealth defects.