TY  - JOUR
AU  - Olmo, G. J.
AU  - Rubiera-Garcia, D.
AU  - Saez-Chillon Gomez, D.
PY  - 2022
DA  - 2022//
TI  - New light rings from multiple critical curves as observational signatures of black hole mimickers
T2  - Phys. Lett. B
JO  - Physics Letters B
SP  - 137045
EP  - 5pp
VL  - 829
PB  - Elsevier
AB  - 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.
SN  - 0370-2693
UR  - https://arxiv.org/abs/2110.10002
UR  - https://doi.org/10.1016/j.physletb.2022.137045
DO  - 10.1016/j.physletb.2022.137045
LA  - English
N1  - WOS:000821533700007
ID  - Olmo_etal2022
ER  -