New light rings from multiple critical curves as observational signatures of black hole mimickers
We argue that the appearance of additional light rings in a shadow observation - beyond the infinite sequence of exponentially demagnified self-similar rings foreseen in the Kerr solution - would make a compelling case for the existence of black hole mimickers having multiple critical curves. We sup...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/71847 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/71847 |
| Access Level: | acceso abierto |
| Palabra clave: | 51-73 Event horizon Shadowmigration Modified gravity Hubble constant Quantum gravity Kozai. Física-Modelos matemáticos Física matemática |
| Sumario: | We argue that the appearance of additional light rings in a shadow observation - beyond the infinite sequence of exponentially demagnified self-similar rings foreseen in the Kerr solution - would make a compelling case for the existence of black hole mimickers having multiple critical curves. We support this claim by discussing three different scenarios of spherically symmetric wormhole geometries having two such critical curves, and explicitly work out the optical appearance of one such object when surrounded by an optically and geometrically thin accretion disk. (C) 2022 The Author(s). Published by Elsevier B.V. |
|---|