Black hole event horizons are cosmologically coupled
Valerio Faraoni, Massimiliano Rinaldi
Abstract
It is shown that an exactly static and spherically symmetric black hole event horizon cannot be embedded in a time-dependent geometry. Forcing it to do so results in a naked null singularity at the would-be horizon. Therefore, since the Universe is expanding, black holes must couple to the cosmological expansion, which was suggested as the growth mechanism for supermassive black holes in galaxies, with implications for the dark energy puzzle.
Topics & Concepts
Event horizonEvent (particle physics)New horizonsBlack hole (networking)PhysicsGeologyComputer scienceAstronomyComputer securityAstrophysicsSpacecraftLink-state routing protocolNetwork packetRouting protocolCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsAstrophysical Phenomena and Observations