Silhouettes of wormholes traversed for radiation

TL;DR

This paper investigates how light passes through zero-mass wormholes, revealing multiple images of stars and complex brightness patterns, which could help observe objects from different space-time regions.

Contribution

It demonstrates the formation of multiple images and brightness distributions of objects seen through zero-mass wormholes, providing new insights into their observational signatures.

Findings

Stars can produce multiple images through wormholes.

Brightness distribution of images is complex and depends on the observer's position.

Images of screens inside wormholes show distinctive radiation patterns.

Abstract

The problem of the passage of light through the mouth of a zero-mass wormhole and the possibility of observing the objects from another asymptotically flat space-time through the mouth of a wormhole are considered. It is shown that an individual star can have several images and the fact that the image of a flat Lambertian screen has a complex brightness distribution for an observer located on the opposite side of the throat. Images of two such screens visible inside the silhouette of a massless wormhole and the distribution of radiation intensity in their images are constructed.