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Recoil velocities from equal-mass binary-black-hole mergers

Recoil velocities from equal-mass binary-black-hole mergers
Recoil velocities from equal-mass binary-black-hole mergers
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 nonspinning binaries with unequal masses have pointed out that kick velocities ~175 km/s can be reached for a mass ratio ~=0.36. However, a larger recoil can be obtained for equal-mass binaries if the asymmetry is provided by the spins. Using two independent methods we show that the merger of such binaries yields velocities as large as ~440 km/s for black holes having unequal spins that are antialigned and parallel to the orbital angular momentum.
0031-9007
041102-[4pp]
Koppitz, Michael
059b34af-e573-4af7-b31a-161f192643d7
Pollney, Denis
a78b371e-934f-4fed-8754-91db5cdeb23e
Reisswig, Christian
b6aed9fa-2dce-4e5c-bbae-5b4bb6341790
Rezzolla, Luciano
179e9831-5ba7-4d93-9728-2b27092b1f40
Thornburg, Jonathan
7164281d-b614-40e4-a27f-c89e874a7b9b
Diener, Peter
62485bb0-81d7-49df-b5ad-8f66610efc55
Schnetter, Erik
fa61f1d3-135d-47af-80e2-4285f37a1e24
Koppitz, Michael
059b34af-e573-4af7-b31a-161f192643d7
Pollney, Denis
a78b371e-934f-4fed-8754-91db5cdeb23e
Reisswig, Christian
b6aed9fa-2dce-4e5c-bbae-5b4bb6341790
Rezzolla, Luciano
179e9831-5ba7-4d93-9728-2b27092b1f40
Thornburg, Jonathan
7164281d-b614-40e4-a27f-c89e874a7b9b
Diener, Peter
62485bb0-81d7-49df-b5ad-8f66610efc55
Schnetter, Erik
fa61f1d3-135d-47af-80e2-4285f37a1e24

Koppitz, Michael, Pollney, Denis, Reisswig, Christian, Rezzolla, Luciano, Thornburg, Jonathan, Diener, Peter and Schnetter, Erik (2007) Recoil velocities from equal-mass binary-black-hole mergers. Physical Review Letters, 99 (4), 041102-[4pp]. (doi:10.1103/PhysRevLett.99.041102).

Record type: Article

Abstract

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 nonspinning binaries with unequal masses have pointed out that kick velocities ~175 km/s can be reached for a mass ratio ~=0.36. However, a larger recoil can be obtained for equal-mass binaries if the asymmetry is provided by the spins. Using two independent methods we show that the merger of such binaries yields velocities as large as ~440 km/s for black holes having unequal spins that are antialigned and parallel to the orbital angular momentum.

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Published date: 27 July 2007

Identifiers

Local EPrints ID: 49194
URI: http://eprints.soton.ac.uk/id/eprint/49194
ISSN: 0031-9007
PURE UUID: 3849fee3-bc80-40db-9064-0ab13fcb894c

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Date deposited: 26 Oct 2007
Last modified: 11 Apr 2022 18:00

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Contributors

Author: Michael Koppitz
Author: Denis Pollney
Author: Christian Reisswig
Author: Luciano Rezzolla
Author: Jonathan Thornburg
Author: Peter Diener
Author: Erik Schnetter

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