Echoes from classical black holes
Hyat Huang, Min-Yan Ou, Meng-Yun Lai, H. Lü
Abstract
We study echoes of free massless scalar from dyonic black holes in Einstein-Maxwell gravity extended with the quasitopological electromagnetic term. These asymptotically flat black holes all satisfy the dominant energy condition. We find that for suitable parameters, the effective potential can have double peaks and consequently echoes of quasinormal modes arise. In general the echo frequency associated with the initial wave packet released inside the two peaks is about twice the frequency of the one released outside.
Topics & Concepts
PhysicsMassless particleBlack hole (networking)EinsteinScalar (mathematics)Quantum electrodynamicsClassical mechanicsGravitational waveMathematical physicsTheoretical physicsQuantum mechanicsNetwork packetGeometryMathematicsRouting protocolLink-state routing protocolComputer scienceComputer networkPulsars and Gravitational Waves ResearchBlack Holes and Theoretical PhysicsAstrophysical Phenomena and Observations