Unequal mass binary black hole plunges and gravitational recoil

By Frank Herrmann, Ian Hinder, D. Shoemaker, Pablo Laguna. 2006

134 citations recorded by the source corpus.

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 ≡ M1/M2 = {1, 0.85, 0.78, 0.55, 0.32}, or equivalently, with reduced mass parameters η ≡ M1M2/(M1 + M2)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.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/45e63730f5823c290cdc55302853b2fc4f597091

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In Astronomy and Astrophysics

Citations in the corpus

A Recoiling Supermassive Black Hole in the Quasar SDSS J092712.65+294344.0? (2008, background): “…produced much higher recoil velocities, up to several thousand km s−1 (Campanelli et al. 2007a,b, González et al. 2007b, Tichy & Marronetti 2007, Herrmann et al. 2007b, Dain et al. 2008, Schnittman et al. 2008), scaling to an expected maximum around 4000 km s−1 (Campanelli et al. 20007a,b,…”
Ejection of Supermassive Black Holes from Galaxy Cores (2007, background): “200kms−1 in the absence of spins (Baker et al. 2006b; González et al. 2007b; Herrmann et al. 2007).”
Black-hole binaries, gravitational waves, and numerical relativity (2010, methodology): “Following on from this, and other unequal-mass simulations by Herrmann et al. (2007b), González et al. (2007b) performed the first systematic parameter study of nonspinning black-hole binary mergers with mass ratios in the range 0.253 ≤ 1/q ≤ 1.”