Observational signatures of hot spots orbiting horizonless objects

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022

Autores

Rosa, JL (Autor) Outra; P. J. V. Garcia (Autor) FEUP; Vincent, FH (Autor) Outra; Cardoso, V (Autor) Outra

Revista

Título: Physical Review D

Vol. 106

ISSN: 2470-0010

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-00X-2Y5

DOI: 10.1103/physrevd.106.044031

Abstract (EN): Pushed by a number of advances, electromagnetic observatories have now reached the horizon scale of supermassive black holes. The existence and properties of horizons in our universe is one of the outstanding fundamental issues that can now be addressed. Here we investigate the ability to discriminate between black holes and compact, horizonless objects, focusing on the lensing of hot spots around compact objects. We work in particular with boson and Proca stars as central objects, and show that the absence of a horizon gives rise to a characteristic feature-photons that plow through the central object and produce an extra image. This feature should be universal for central objects made of matter weakly coupled to the standard model.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 19