Modeling multipolar gravitational-wave emission from small mass-ratio mergers

Details Modeling multipolar gravitational-wave emission from small mass-ratio mergers Modeling multipolar gravitational-wave emission from small mass-ratio mergers

2011-10-13

arxiv.org/abs/1110.3081v2

Phys. Rev. D 85, 024046 (2012)

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

19 pages, 14 figures, 6 tables. Minor revisions (results unchanged) to match version published in PRD

Scientific paper

10.1103/PhysRevD.85.024046

Using the effective-one-body (EOB) formalism and a time-domain Teukolsky code, we generate inspiral, merger, and ringdown waveforms in the small mass-ratio limit. We use EOB inspiral and plunge trajectories to build the Teukolsky equation source term, and compute full coalescence waveforms for a range of black hole spins. By comparing EOB waveforms that were recently developed for comparable mass binary black holes to these Teukolsky waveforms, we improve the EOB model for the (2,2), (2,1), (3,3), and (4,4) modes. Our results can be used to quickly and accurately extract useful information about merger waves for binaries with spin, and should be useful for improving analytic models of such binaries.

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