Higher-order inner photon rings of a horizonless ultracompact object with an antiphoton sphere and their interferometric pattern
Sign Up to like & getrecommendations! Published in 2025 at "Chinese Physics C"
DOI: 10.1088/1674-1137/addc52
Abstract: A horizonless ultracompact object can have a stable antiphoton sphere, which causes the photons inside the unstable photon sphere to strongly deflect, thereby leading to the formation of distinctive inner photon rings. In this study,… read more here.
Keywords: higher order; photon; horizonless ultracompact; photon rings ... See more keywords
Hotspots and photon rings in spherically-symmetric spacetimes
Sign Up to like & getrecommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stae1321
Abstract: Future black hole (BH) imaging observations are expected to resolve finer features corresponding to higher-order images of hotspots and of the horizon-scale accretion flow. In spherical spacetimes, the image order is determined by the number… read more here.
Keywords: diameters widths; hotspots photon; order images; photon rings ... See more keywords