Fuzzball Shadows: Emergent Horizons from Microstructure
Fuzzball Shadows: Emergent Horizons from Microstructure
We study the physical properties of four-dimensional, string-theoretical, horizonless "fuzzball" geometries by imaging their shadows. Their microstructure traps light rays straying near the would-be horizon on long-lived, highly redshifted chaotic orbits. In fuzzballs sufficiently near the scaling limit this creates a shadow much like that of a black hole, while …