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• W2514035918 abstract "We solve the Hamiltonian and momentum constraints of general relativity for two black holes with nearly extremal spins and relativistic boosts in the puncture formalism. We use a non-conformally-flat ansatz with an attenuated superposition of two Lorentz-boosted, conformally Kerr or conformally Schwarzschild 3-metrics and their corresponding extrinsic curvatures. We compare evolutions of these data with the standard Bowen-York conformally flat ansatz (technically limited to intrinsic spins $ensuremath{chi}=S/{M}_{mathrm{ADM}}^{2}=0.928$ and boosts $P/{M}_{mathrm{ADM}}=0.897$), finding, typically, an order of magnitude smaller burst of spurious radiation and agreement with inspiral and merger. As a first case study, we evolve two equal-mass black holes from rest with an initial separation of $d=12M$ and spins ${ensuremath{chi}}_{i}={S}_{i}/{m}_{i}^{2}=0.99$, compute the waveforms produced by the collision, the energy and angular momentum radiated, and the recoil of the final remnant black hole. We find that the black-hole trajectories curve at close separations, leading to the radiation of angular momentum. We also study orbiting nonspinning and moderate-spin black-hole binaries and compare these with standard Bowen-York data. We find a substantial reduction in the nonphysical initial burst of radiation which leads to cleaner waveforms. Finally, we study the case of orbiting binary black-hole systems with spin magnitude ${ensuremath{chi}}_{i}=0.95$ in an aligned configuration and compare waveform and final remnant results with those of the SXS Collaboration [A. H. Mroue et al., Phys. Rev. Lett. 111, 241104 (2013).], finding excellent agreement. This represents the first moving puncture evolution of orbiting and spinning black holes exceeding the Bowen-York limit. Finally, we study different choices of the initial lapse and lapse evolution equation in the moving puncture approach to improve the accuracy and efficiency of the simulations." @default.
• W2514035918 created "2016-09-16" @default.
• W2514035918 creator A5047629855 @default.
• W2514035918 creator A5057766157 @default.
• W2514035918 creator A5076063682 @default.
• W2514035918 creator A5077870049 @default.
• W2514035918 date "2017-01-27" @default.
• W2514035918 modified "2023-10-15" @default.
• W2514035918 title "Puncture initial data for black-hole binaries with high spins and high boosts" @default.
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• W2514035918 doi "https://doi.org/10.1103/physrevd.95.024033" @default.
• W2514035918 hasPublicationYear "2017" @default.
• W2514035918 type Work @default.

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