Approximate black hole binary spacetime via asymptotic matching

Mundim, Bruno C.; Nakano, Hiroyuki; Yunes, Nicolás; Campanelli, Manuela; Noble, Scott C.; Zlochower, Yosef

doi:10.1103/PhysRevD.89.084008

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Approximate black hole binary spacetime via asymptotic matching

MPG-Autoren

Mundim, Bruno C.
AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Zitation

Mundim, B. C., Nakano, H., Yunes, N., Campanelli, M., Noble, S. C., & Zlochower, Y. (2014). Approximate black hole binary spacetime via asymptotic matching. Physical Review D, 89: 084008. doi:10.1103/PhysRevD.89.084008.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-001A-1152-B

Zusammenfassung

We construct a fully analytic, general relativistic, nonspinning black hole binary spacetime that approximately solves the vacuum Einstein equations everywhere in space and time for black holes sufficiently well separated. The metric is constructed by asymptotically matching perturbed Schwarzschild metrics near each black hole to a two-body post-Newtonian metric far from them, and a two-body post-Minkowskian metric farther still. Asymptotic matching is done without linearizing about a particular time slice, and thus it is valid dynamically and for all times, provided the binary is sufficiently well separated. This approximate global metric can be used for long dynamical evolutions of relativistic magnetohydrodynamical, circumbinary disks around inspiraling supermassive black holes to study a variety of phenomena.