Reflection-asymmetric wormholes and their double shadows

We discuss construction and observational properties of wormholes obtained by connecting two Reissner-Nordström spacetimes with distinct mass and charge parameters. These objects are spherically symmetric, but not reflection symmetric, as the connected spacetimes differ. The reflection-asymmetric wo...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. D 2020-10, Vol.102 (8), Article 084044
Main Authors: Wielgus, Maciek, Horák, Jiří, Vincent, Frederic, Abramowicz, Marek
Format: Article
Language:English
Subjects:
Astrophysics
Asymmetry
Black holes
General Relativity and Quantum Cosmology
Parameters
Photons
Physics
Rings (mathematics)
Shadows
Spacetime
Wormholes
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We discuss construction and observational properties of wormholes obtained by connecting two Reissner-Nordström spacetimes with distinct mass and charge parameters. These objects are spherically symmetric, but not reflection symmetric, as the connected spacetimes differ. The reflection-asymmetric wormholes may reflect a significant fraction of the infalling radiation back to the spacetime of its origin. We interpret this effect in a simple framework of the effective photon potential. Depending on the model parameters, image of such a wormhole seen by a distant observer (its "shadow") may contain a photon ring formed on the observer's side, photon ring formed on the other side of the wormhole, or both photon rings. These unique topological features would allow us to firmly distinguish this class of objects from Kerr black holes using radioastronomical observations.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.102.084044