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Article: Energetic constraints on electromagnetic signals from double black hole mergers

TitleEnergetic constraints on electromagnetic signals from double black hole mergers
Authors
KeywordsBlack hole physics
Gravitational waves
Neutrinos
Stars: black holes
Gamma-ray burst: general
Supernovae: general
Issue Date2017
PublisherOxford University Press. The Journal's web site is located at https://academic.oup.com/mnrasl/
Citation
Monthly Notices of the Royal Astronomical Society: Letters, 2017, v. 470 n. 1, p. L92-L96 How to Cite?
AbstractThe possible Fermi detection of an electromagnetic counterpart to the double black hole merger GW150914 has inspired many theoretical models, some of which propose that the holes spiralled together inside a massive star. However, we show that the heat produced by the dynamical friction on such black hole orbits can exceed the stellar binding energy by a large factor, which means that this heat could destroy the star. The energy scale of the explosion and the terminal velocity of the gas can be much larger than those in conventional supernovae. If the star unbinds before the merger, it would be hard for enough gas to remain near the holes at the merger to produce a gamma-ray burst, and this consideration should be taken into account when models are proposed for electromagnetic counterparts to the coalescence of two stellar-mass black holes. We find that only when the two black holes form very close to the centre can the star certainly avoid destruction. In that case, dynamical friction can make the black holes coalesce faster than they would in vacuum, which leads to a modification of the gravitational waveform that is potentially observable by advanced LIGO.
Persistent Identifierhttp://hdl.handle.net/10722/283142
ISSN
2023 SCImago Journal Rankings: 1.521
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorDai, L-
dc.contributor.authorMcKinney, JC-
dc.contributor.authorMiller, MC-
dc.date.accessioned2020-06-15T01:27:53Z-
dc.date.available2020-06-15T01:27:53Z-
dc.date.issued2017-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society: Letters, 2017, v. 470 n. 1, p. L92-L96-
dc.identifier.issn1745-3925-
dc.identifier.urihttp://hdl.handle.net/10722/283142-
dc.description.abstractThe possible Fermi detection of an electromagnetic counterpart to the double black hole merger GW150914 has inspired many theoretical models, some of which propose that the holes spiralled together inside a massive star. However, we show that the heat produced by the dynamical friction on such black hole orbits can exceed the stellar binding energy by a large factor, which means that this heat could destroy the star. The energy scale of the explosion and the terminal velocity of the gas can be much larger than those in conventional supernovae. If the star unbinds before the merger, it would be hard for enough gas to remain near the holes at the merger to produce a gamma-ray burst, and this consideration should be taken into account when models are proposed for electromagnetic counterparts to the coalescence of two stellar-mass black holes. We find that only when the two black holes form very close to the centre can the star certainly avoid destruction. In that case, dynamical friction can make the black holes coalesce faster than they would in vacuum, which leads to a modification of the gravitational waveform that is potentially observable by advanced LIGO.-
dc.languageeng-
dc.publisherOxford University Press. The Journal's web site is located at https://academic.oup.com/mnrasl/-
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society: Letters-
dc.rightsThis article has been accepted for publication in Monthly Notices of the Royal Astronomical Society: Letters ©: 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.-
dc.subjectBlack hole physics-
dc.subjectGravitational waves-
dc.subjectNeutrinos-
dc.subjectStars: black holes-
dc.subjectGamma-ray burst: general-
dc.subjectSupernovae: general-
dc.titleEnergetic constraints on electromagnetic signals from double black hole mergers-
dc.typeArticle-
dc.identifier.emailDai, L: lixindai@hku.hk-
dc.identifier.authorityDai, L=rp02540-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1093/mnrasl/slx086-
dc.identifier.scopuseid_2-s2.0-85124478504-
dc.identifier.volume470-
dc.identifier.issue1-
dc.identifier.spageL92-
dc.identifier.epageL96-
dc.identifier.isiWOS:000484597900004-
dc.publisher.placeUnited Kingdom-

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