Explosion and Final State of an Unstable Reissner-Nordström Black Hole
| Autor: | Nicolas Sanchis-Gual, José A. Font, Pedro J. Montero, Carlos A. R. Herdeiro, Juan Carlos Degollado |
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| Rok vydání: | 2016 |
| Předmět: |
Physics
High Energy Physics - Theory 010308 nuclear & particles physics Horizon General Physics and Astronomy FOS: Physical sciences Charge (physics) General Relativity and Quantum Cosmology (gr-qc) Charged black hole Critical value 01 natural sciences General Relativity and Quantum Cosmology Black hole Numerical relativity High Energy Physics - Theory (hep-th) Quantum electrodynamics 0103 physical sciences Circular symmetry 010306 general physics Scalar field |
| Zdroj: | Physical Review Letters Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 0031-9007 0044-4510 0038-5646 |
| DOI: | 10.1103/PhysRevLett.116.141101 |
| Popis: | A Reissner-Nordstr\"om black hole (BH) is superradiantly unstable against spherical perturbations of a charged scalar field, enclosed in a cavity, with frequency lower than a critical value. We use numerical relativity techniques to follow the development of this unstable system -- dubbed a charged BH bomb -- into the non-linear regime, solving the full Einstein--Maxwell--Klein-Gordon equations, in spherical symmetry. We show that: $i)$ the process stops before all the charge is extracted from the BH; $ii)$ the system settles down into a hairy BH: a charged horizon in equilibrium with a scalar field condensate, whose phase is oscillating at the (final) critical frequency. For low scalar field charge, $q$, the final state is approached smoothly and monotonically. For large $q$, however, the energy extraction overshoots and an explosive phenomenon, akin to a $bosenova$, pushes some energy back into the BH. The charge extraction, by contrast, does not reverse. Comment: 5 pages, 4 figures; v2: 8 pages, including Supplemental Material; matches published version in Phys. Rev. Lett.; title changed |
| Databáze: | OpenAIRE |
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