Toroidal horizons in binary black hole inspirals
| Autor: | Jeffrey D. Kaplan, Michael I. Cohen, Mark A. Scheel |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Physics
Nuclear and High Energy Physics 010308 nuclear & particles physics Event horizon FOS: Physical sciences Torus General Relativity and Quantum Cosmology (gr-qc) Fuzzball 01 natural sciences General Relativity and Quantum Cosmology Black hole Numerical relativity Classical mechanics Binary black hole Nonsingular black hole models 0103 physical sciences Extremal black hole Statistical physics 010306 general physics |
| Popis: | We examine the structure of the event horizon for numerical simulations of two black holes that begin in a quasicircular orbit, inspiral, and finally merge. We find that the spatial cross section of the merged event horizon has spherical topology (to the limit of our resolution), despite the expectation that generic binary black hole mergers in the absence of symmetries should result in an event horizon that briefly has a toroidal cross section. Using insight gained from our numerical simulations, we investigate how the choice of time slicing affects both the spatial cross section of the event horizon and the locus of points at which generators of the event horizon cross. To ensure the robustness of our conclusions, our results are checked at multiple numerical resolutions. 3D visualization data for these resolutions are available for public access online. We find that the structure of the horizon generators in our simulations is consistent with expectations, and the lack of toroidal horizons in our simulations is due to our choice of time slicing. Comment: Submitted to Phys. Rev. D |
| Databáze: | OpenAIRE |
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