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Article: The kozai mechanism and the evolution of binary supermassive black holes

TitleThe kozai mechanism and the evolution of binary supermassive black holes
Authors
KeywordsBlack Hole Physics
Galaxies: Interactions
Galaxies: Nuclei
Issue Date2002
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205
Citation
Astrophysical Journal Letters, 2002, v. 578 n. 2 I, p. 775-786 How to Cite?
AbstractWe consider the dynamical evolution of bound, hierarchical triples of supermassive black holes that might be formed in the nuclei of galaxies undergoing sequential mergers. The tidal force of the outer black hole on the inner binary produces eccentricity oscillations through the Kozai mechanism, and this can substantially reduce the gravitational wave merger time of the inner binary. We numerically calculate the merger time for a wide range of initial conditions and black hole mass ratios, including the effects of octupole interactions in the triple as well as general relativistic periastron precession in the inner binary. The semimajor axes and the mutual inclination of the inner and outer binaries are the most important factors affecting the merger time. We find that for a random distribution of inclination angles and approximately equal mass black holes, it is possible to reduce the merger time of a near circular inner binary by more than a factor of 10 in over 50% of all cases. We estimate that a typical exterior quadrupole moment from surrounding matter in the galaxy may also be sufficient to excite eccentricity oscillations in supermassive black hole binaries and to accelerate black hole mergers.
Persistent Identifierhttp://hdl.handle.net/10722/151106
ISSN
2015 Impact Factor: 5.487
2015 SCImago Journal Rankings: 3.369
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorBlaes, Oen_US
dc.contributor.authorLee, MHen_US
dc.contributor.authorSocrates, Aen_US
dc.date.accessioned2012-06-26T06:17:08Z-
dc.date.available2012-06-26T06:17:08Z-
dc.date.issued2002en_US
dc.identifier.citationAstrophysical Journal Letters, 2002, v. 578 n. 2 I, p. 775-786en_US
dc.identifier.issn2041-8205en_US
dc.identifier.urihttp://hdl.handle.net/10722/151106-
dc.description.abstractWe consider the dynamical evolution of bound, hierarchical triples of supermassive black holes that might be formed in the nuclei of galaxies undergoing sequential mergers. The tidal force of the outer black hole on the inner binary produces eccentricity oscillations through the Kozai mechanism, and this can substantially reduce the gravitational wave merger time of the inner binary. We numerically calculate the merger time for a wide range of initial conditions and black hole mass ratios, including the effects of octupole interactions in the triple as well as general relativistic periastron precession in the inner binary. The semimajor axes and the mutual inclination of the inner and outer binaries are the most important factors affecting the merger time. We find that for a random distribution of inclination angles and approximately equal mass black holes, it is possible to reduce the merger time of a near circular inner binary by more than a factor of 10 in over 50% of all cases. We estimate that a typical exterior quadrupole moment from surrounding matter in the galaxy may also be sufficient to excite eccentricity oscillations in supermassive black hole binaries and to accelerate black hole mergers.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205en_US
dc.relation.ispartofAstrophysical Journal Lettersen_US
dc.subjectBlack Hole Physicsen_US
dc.subjectGalaxies: Interactionsen_US
dc.subjectGalaxies: Nucleien_US
dc.titleThe kozai mechanism and the evolution of binary supermassive black holesen_US
dc.typeArticleen_US
dc.identifier.emailLee, MH:mhlee@hku.hken_US
dc.identifier.authorityLee, MH=rp00724en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1086/342655en_US
dc.identifier.scopuseid_2-s2.0-0042733188en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0042733188&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume578en_US
dc.identifier.issue2 Ien_US
dc.identifier.spage775en_US
dc.identifier.epage786en_US
dc.identifier.isiWOS:000178617600008-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridBlaes, O=7004185707en_US
dc.identifier.scopusauthoridLee, MH=7409119699en_US
dc.identifier.scopusauthoridSocrates, A=6506910677en_US

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