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On the equal-mass limit of precessing black-hole binaries

dc.creatorGerosa, D
dc.creatorSperhake, Ulrich
dc.creatorVošmera, J
dc.date.accessioned2017-02-06
dc.date.accessioned2018-11-24T23:19:59Z
dc.date.available2017-05-02T13:07:10Z
dc.date.available2018-11-24T23:19:59Z
dc.date.issued2017-03-23
dc.identifierhttps://www.repository.cam.ac.uk/handle/1810/263946
dc.identifier.urihttp://repository.aust.edu.ng/xmlui/handle/123456789/3522
dc.description.abstractWe analyze the inspiral dynamics of equal-mass precessing black-hole binaries using multi-timescale techniques. The orbit-averaged post-Newtonian evolutionary equations admit two constants of motion in the equal-mass limit, namely the magnitude of the total spin S and the effective spin ξ. This feature makes the entire dynamics qualitatively different compared to the generic unequal-mass case, where only ξ is constant while the variable S parametrizes the precession dynamics. For fixed individual masses and spin magnitudes, an equal-mass black-hole inspiral is uniquely characterized by the two parameters : these two numbers completely determine the entire evolution under the effect of radiation reaction. In particular, for equal-mass binaries we find that (i) the black-hole binary spin morphology is constant throughout the inspiral, and that (ii) the precessional motion of the two black-hole spins about the total spin takes place on a longer timescale than the precession of the total spin and the orbital plane about the total angular momentum.
dc.languageen
dc.publisherInstitute of Physics
dc.publisherClassical and Quantum Gravity
dc.rightshttp://creativecommons.org/licenses/by/4.0/
dc.rightshttp://creativecommons.org/licenses/by/4.0/
dc.rightshttp://creativecommons.org/licenses/by/4.0/
dc.rightsAttribution 4.0 International
dc.rightsAttribution 4.0 International
dc.rightsAttribution 4.0 International
dc.subjectblack holes
dc.subjectgravitational waves
dc.subjectpost-Newtonian theory
dc.titleOn the equal-mass limit of precessing black-hole binaries
dc.typeArticle


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