Accelerating black holes: quasinormal modes and late-time tails
| Autor: | Filipe C. Mena, Kyriakos Destounis, Rodrigo Dal Bosco Fontana |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Spacetime 010308 nuclear & particles physics Gravitational wave Astrophysics::High Energy Astrophysical Phenomena Scalar (mathematics) FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) 01 natural sciences General Relativity and Quantum Cosmology Black hole Quantum electrodynamics 0103 physical sciences Radiative transfer Exponential decay 010306 general physics Numerical stability Reference frame |
| Popis: | Black holes found in binaries move at very high velocities relative to our own reference frame and can accelerate due to the emission of gravitational radiation. Here, we investigate the numerical stability and late-time behavior of linear scalar perturbations in accelerating black holes described by the $C-$metric. We identify a family of quasinormal modes associated with the photon surface and a brand new family of purely imaginary modes associated with the boost parameter of the accelerating black hole spacetime. When the accelerating black hole is charged, we find a third family of modes which dominates the ringdown waveform near extremality. Our frequency and time domain analysis indicate that such spacetimes are stable under scalar fluctuations, while the late-time behavior follows an exponential decay law, dominated by quasinormal modes. This result is in contrast with the common belief that such perturbations, for black holes without a cosmological constant, always have a power-law cutoff. In this sense, our results suggest that the asymptotic structure of black hole backgrounds does not always dictate how radiative fields behave at late times. 15 pages, 8 figures, matches published version |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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