Observations of orbiting hot spots around naked singularities
Y. Chen, Peng Wang, Houwen Wu, Haitang Yang
Abstract
Abstract Recently, it has been reported that photons can traverse naked singularities in the Janis-Newman-Winicour and Born-Infeld spacetimes when these singularities are appropriately regularized. In this paper, we investigate observational signatures of hot spots orbiting these naked singularities, with a focus on discerning them from black holes. In contrast to Schwarzschild black holes, we unveil the presence of multiple additional image tracks within critical curves in time integrated images capturing a complete orbit of hot spots. Moreover, these new images manifest as a more pronounced second-highest peak in temporal magnitudes when observed at low inclinations.
Topics & Concepts
PhysicsNaked singularityAstronomySpotsAstrophysicsGravitational singularityTheoretical physicsQuantum mechanicsPhysical chemistryChemistryAstrophysical Phenomena and ObservationsPulsars and Gravitational Waves ResearchAstrophysics and Cosmic Phenomena