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During the inspiral and merger of black holes, the interaction of gravitational wave multipoles carries linear momentum away, thereby providing an astrophysically important recoil, or "kick" to the system and to the final black hole…

General Relativity and Quantum Cosmology · Physics 2011-06-13 Richard H. Price , Gaurav Khanna , Scott A. Hughes

We present results from an extensive study of 88 precessing, equal-mass black-hole binaries with large spins (83 with intrinsic spins of 0.8 and 5 with intrinsic spins of 0.9)and use these data to model new nonlinear contributions to the…

General Relativity and Quantum Cosmology · Physics 2014-01-14 Carlos O. Lousto , Yosef Zlochower

The final evolution of a binary black-hole system gives rise to a recoil velocity if an asymmetry is present in the emitted gravitational radiation. Measurements of this effect for non-spinning binaries with unequal masses have pointed out…

General Relativity and Quantum Cosmology · Physics 2010-04-06 Michael Koppitz , Denis Pollney , Christian Reisswig , Luciano Rezzolla , Jonathan Thornburg , Peter Diener , Erik Schnetter

The asymmetric emission of gravitational waves produced during the coalescence of a massive black hole (MBH) binary imparts a velocity "kick" to the system that can displace the hole from the center of its host. Here we study the…

Astrophysics of Galaxies · Physics 2015-05-19 Javiera Guedes , Piero Madau , Lucio Mayer , Simone Callegari

Recent hydrodynamical simulations have shown that circumbinary gas disks drive the orbits of binary black holes to become eccentric, even when general relativistic corrections to the orbit are significant. Here, we study the general…

(Abridged) To gain insight into the dynamical influence of a supermassive black hole binary on a circumbinary accretion disk, we investigate the binary and viscous torque densities throughout such a disk, with emphasis on the final density…

High Energy Astrophysical Phenomena · Physics 2025-11-07 Michal Pirog , Siddharth Mahesh , Sean T. McWilliams

Binary black hole systems (BBHs) have become a vivid reality in astrophysics as stellar-mass black hole mergers are now detected through their related gravitational wave emission during the merger stage. If many studies were recently…

High Energy Astrophysical Phenomena · Physics 2025-05-28 Fabien Casse , Peggy Varniere , Léna Arthur , Fabrice Dodu

Generic black hole binaries radiate gravitational waves anisotropically, imparting a recoil, or kick, velocity to the merger remnant. If a component of the kick along the line of sight is present, gravitational waves emitted during the…

General Relativity and Quantum Cosmology · Physics 2016-06-30 Davide Gerosa , Christopher J. Moore

We model the spectra and light curves of circumbinary accretion disks during the time after the central black holes merge. The most immediate effect of this merger is the dissipation of energy in the outer regions of the disk due to the…

Astrophysics · Physics 2011-09-23 Jeremy D. Schnittman , Julian H. Krolik

Recoil ``kicks'' induced by gravitational radiation are expected in the inspiral and merger of black holes. Recently the numerical relativity community has begun to measure the significant kicks found when both unequal masses and spins are…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Dae-Il Choi , Bernard J. Kelly , William D. Boggs , John G. Baker , Joan Centrella , James van Meter

If a Kerr black hole is connected to a disk rotating around it by a magnetic field, the rotational energy of the Kerr black hole provides an energy source for the radiation of the disk in addition to disk accretion. The black hole exerts a…

Astrophysics · Physics 2009-10-31 Li-Xin Li

We study time evolution and gravitational wave emission properties of a black hole orbiting {\it inside} an accretion disk surrounding a massive black hole. We simultaneously solve the structure equations of the accretion disk in presence…

Astrophysics · Physics 2011-09-09 Sandip K. Chakrabarti

Asymmetric binary systems radiate linear momentum through gravitational waves, leading to the recoil of the merger remnant. Black-hole kicks have attracted much attention because of their astrophysical implications. However, little…

General Relativity and Quantum Cosmology · Physics 2021-06-07 Angela Borchers , Frank Ohme

Black hole spins affect the efficiency of the "classical" accretion processes, hence the radiative output from quasars. Spins also determine how much energy is extractable from the hole itself. Recently it became clear that massive black…

High Energy Astrophysical Phenomena · Physics 2010-10-06 Marta Volonteri

The spin of black holes in black hole-neutron star (BHNS) binaries can have a strong influence on the merger dynamics and the postmerger state; a wide variety of spin magnitudes and orientations are expected to occur in nature. In this…

High Energy Astrophysical Phenomena · Physics 2011-02-25 Francois Foucart , Matthew D. Duez , Lawrence E. Kidder , Saul A. Teukolsky

Recent general relativistic simulations have shown that the coalescence of two spinning black holes (BH) can lead to recoiling speeds of the BH remnant of up to thousands of km/s as a result of the gravitational radiation emission. It is…

Astrophysics of Galaxies · Physics 2017-05-08 M. Yu. Piotrovich , Yu. N. Gnedin , T. M. Natsvlishvili , S. D. Buliga

We discuss the observational consequences of black hole spin in X-ray binaries within the framework of the standard thin accretion disk model. When compared to theoretical flux distribution from the surface of a thin disk surrounding a Kerr…

Astrophysics · Physics 2009-10-30 S. N. Zhang , Wei Cui , Wan Chen

[ABRIDGED] We study supermassive black hole binary mergers driven by angular momentum loss to small-scale gas discs. Such binaries form after major galaxy mergers, but their fate is unclear since hardening through stellar scattering becomes…

Astrophysics · Physics 2009-03-08 J. Cuadra , P. J. Armitage , R. D. Alexander , M. C. Begelman

In this Letter we revisit arguments suggesting that the Bardeen-Petterson effect can coalign the spins of a central supermassive black hole binary accreting from a circumbinary (or circumnuclear) gas disc. We improve on previous estimates…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-25 Giuseppe Lodato , Davide Gerosa

Circumbinary disks are found in a variety of astrophysical scenarios, spanning binary star formation to accreting supermassive black hole binaries. The interaction with a circumbinary disk can yield opposite effects on the binary orbit…