Binary-black-hole initial data with nearly-extremal spins
| dc.creator | Lovelace, Geoffrey | |
| dc.creator | Owen, Robert | |
| dc.creator | Pfeiffer, Harald P. | |
| dc.creator | Chu, Tony | |
| dc.date | 2008-05-27 | |
| dc.date | 2008-10-16 | |
| dc.date.accessioned | 2026-07-07T12:44:37Z | |
| dc.date.available | 2026-07-07T12:44:37Z | |
| dc.description | There is a significant possibility that astrophysical black holes with nearly-extremal spins exist. Numerical simulations of such systems require suitable initial data. In this paper, we examine three methods of constructing binary-black-hole initial data, focusing on their ability to generate black holes with nearly-extremal spins: (i) Bowen-York initial data, including standard puncture data (based on conformal flatness and Bowen-York extrinsic curvature), (ii) standard quasi-equilibrium initial data (based on the extended-conformal-thin-sandwich equations, conformal flatness, and maximal slicing), and (iii) quasi-equilibrium data based on the superposition of Kerr-Schild metrics. We find that the two conformally-flat methods (i) and (ii) perform similarly, with spins up to about 0.99 obtainable at the initial time. However, in an evolution, we expect the spin to quickly relax to a significantly smaller value around 0.93 as the initial geometry relaxes. For quasi-equilibrium superposed Kerr-Schild (SKS) data [method (iii)], we construct initial data with \emph{initial} spins as large as 0.9997. We evolve SKS data sets with spins of 0.93 and 0.97 and find that the spin drops by only a few parts in 10^4 during the initial relaxation; therefore, we expect that SKS initial data will allow evolutions of binary black holes with relaxed spins above 0.99. [Abstract abbreviated; full abstract also mentions several secondary results.] | |
| dc.identifier | https://arxiv.org/abs/0805.4192 | |
| dc.identifier | http://arxiv.org/abs/0805.4192 | |
| dc.identifier | Phys.Rev.D78:084017,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.78.084017 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/220828 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Binary-black-hole initial data with nearly-extremal spins | |
| dc.type | text |