Exploring black hole superkicks

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dc.creatorBruegmann, Bernd
dc.creatorGonzalez, Jose
dc.creatorHannam, Mark
dc.creatorHusa, Sascha
dc.creatorSperhake, Ulrich
dc.date2007-07-02
dc.date.accessioned2026-07-07T11:52:43Z
dc.date.available2026-07-07T11:52:43Z
dc.descriptionRecent calculations of the recoil velocity in black-hole binary mergers have found kick velocities of $\approx2500 $km/s for equal-mass binaries with anti-aligned initial spins in the orbital plane. In general the dynamics of spinning black holes can be extremely complicated and are difficult to analyze and understand. In contrast, the ``superkick'' configuration is an example with a high degree of symmetry that also exhibits exciting physics. We exploit the simplicity of this ``test case'' to study more closely the role of spin in black-hole recoil and find that: the recoil is with good accuracy proportional to the difference between the $(l = 2, m = \pm 2)$ modes of $Ψ_4$, the major contribution to the recoil occurs within $30M$ before and after the merger, and that this is after the time at which a standard post-Newtonian treatment breaks down. We also discuss consequences of the $(l = 2, m = \pm 2)$ asymmetry in the gravitational wave signal for the angular dependence of the SNR and the mismatch of the gravitational wave signals corresponding to the north and south poles.
dc.identifierhttps://arxiv.org/abs/0707.0135
dc.identifierhttp://arxiv.org/abs/0707.0135
dc.identifierPhys.Rev.D77:124047,2008
dc.identifierdoi:10.1103/PhysRevD.77.124047
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204279
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleExploring black hole superkicks
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