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Beyond the Bowen–York extrinsic curvature for spinning black holes

Mark Hannam, Sascha Husa, Bernd Brügmann, José A González and Ulrich Sperhake

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It is well known that Bowen–York initial data contain spurious radiation. Although this 'junk' radiation has been seen to be small for non-spinning black-hole binaries in circular orbit, its magnitude increases when the black holes are given spin. It is possible to reduce the spurious radiation by applying the puncture approach to multiple Kerr black holes, as we demonstrate for examples of head-on collisions of equal-mass black-hole binaries.


PACS

04.70.-s Physics of black holes

97.60.Lf Black holes

04.20.Ex Initial value problem, existence and uniqueness of solutions

04.30.-w Gravitational waves

02.40.-k Geometry, differential geometry, and topology

MSC

83C35 Gravitational waves

83C05 Einstein's equations (general structure, canonical formalism, Cauchy problems)

83C57 Black holes

Subjects

Mathematical physics

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 12 (21 June 2007)

Received 30 November 2006, in final form 2 March 2007

Published 30 May 2007



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