Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2007-10-21
Phys.Rev.D78:064069,2008
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Added sequence of long inspirals to the study. To match published version
Scientific paper
10.1103/PhysRevD.78.064069
We study the transition from inspiral to plunge in general relativity by computing gravitational waveforms of non-spinning, equal-mass black-hole binaries. We consider three sequences of simulations, starting with a quasi-circular inspiral completing 1.5, 2.3 and 9.6 orbits, respectively, prior to coalescence of the holes. For each sequence, the binding energy of the system is kept constant and the orbital angular momentum is progressively reduced, producing orbits of increasing eccentricity and eventually a head-on collision. We analyze in detail the radiation of energy and angular momentum in gravitational waves, the contribution of different multipolar components and the final spin of the remnant. We find that the motion transitions from inspiral to plunge when the orbital angular momentum L=L_crit is about 0.8M^2. For L
Ansorg Marcus
Berti Emanuele
Bruegmann Bernd
Cardoso Vitor
Gonzalez Jose A.
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