期刊
CLASSICAL AND QUANTUM GRAVITY
卷 24, 期 12, 页码 S33-S42出版社
IOP PUBLISHING LTD
DOI: 10.1088/0264-9381/24/12/S04
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We present results from fully nonlinear simulations of unequal mass binary black holes plunging from close separations well inside the innermost stable circular orbit with mass ratios q = M-1/ M-2 = {1, 0.85, 0.78, 0.55, 0.32}, or equivalently, with reduced mass parameters. = M1M2/(M-1 + M-2)(2) = {0.25, 0.248, 0.246, 0.229, 0.183}. For each case, the initial binary orbital parameters are chosen from the Cook-Baumgarte equal-mass ISCO configuration. We show waveforms of the dominant l = 2, 3 modes and compute estimates of energy and angular momentum radiated. For the plunges from the close separations considered, we measure kick velocities from gravitational radiation recoil in the range 25-82 km s(-1) . Due to the initial close separations our kick velocity estimates should be understood as a lower bound. The close configurations considered are also likely to contain significant eccentricities influencing the recoil velocity.
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