Observational signature and additional photon rings of an asymmetric thin-shell wormhole

Jun Peng, Minyong Guo, Xing Hui Feng*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

13 Citations (Scopus)
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Recently, a distinct shadow mechanism was proposed by Wang et al. from the asymmetric thin-shell wormhole (ATW) [X. Wang, Phys. Lett. B 811, 135930 (2020)PYLBAJ0370-269310.1016/j.physletb.2020.135930]. On the other hand, Gralla, Holz, and Wald's work [Phys. Rev. D 100, 024018 (2019)PRVDAQ2470-001010.1103/PhysRevD.100.024018] represented a nice description of photon rings in the presence of an accretion disk around a black hole. In this paper, we are inspired to thoroughly investigate the observational appearance of an accretion disk around the ATW. Although the spacetime outside an ATW with a throat could be identical to that containing a black hole with its event horizon, we show evident additional photon rings from the ATW spacetime. Moreover, a potential lensing band between two highly demagnified photon rings is found. Our analysis provides an optically observational signature to distinguish ATWs from black holes.

Original languageEnglish
Article number124010
Number of pages7
JournalPhysical Review D
Issue number12
Publication statusPublished - 15-Dec-2021

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