Shadow cast of noncommutative black holes in Rastall gravity
Ali Övgün, İzzet Sakallı, Joel Saavedra, Carlos Leiva
Abstract
We study the shadow and energy emission rate of a spherically symmetric noncommutative black hole in Rastall gravity. Depending on the model parameters, the noncommutative black hole can reduce to the Schwarzschild black hole. Since the nonvanishing noncommutative parameter affects the formation of event horizon, the visibility of the resulting shadow depends on the noncommutative parameter in Rastall gravity. The obtained sectional shadows respect the unstable circular orbit condition, which is crucial for physical validity of the black hole image model.
Topics & Concepts
PhysicsNoncommutative geometryNoncommutative quantum field theoryShadow (psychology)Black hole (networking)Schwarzschild metricSchwarzschild radiusMathematical physicsEvent horizonHawking radiationMicro black holeClassical mechanicsEvent (particle physics)VisibilityCharged black holeCircular orbitObservableBinary black holeWhite holeNoncommutative and Quantum Gravity TheoriesBlack Holes and Theoretical PhysicsAdvanced Differential Geometry Research