Journal article

Intermediate-mass black holes' effects on compact object binaries

Abstract:: Although their existence is not yet confirmed observationally, intermediate-mass black holes (IMBHs) may play a key role in the dynamics of galactic nuclei. In this paper, we neglect the effect of the nuclear star cluster itself and investigate only how a small reservoir of IMBHs influences the secular dynamics of stellar-mass black hole binaries, using N-body simulations. We show that our simplifications are valid and that the IMBHs significantly enhance binary evaporation by pushing the binaries into the Hill-unstable region of parameter space, where they are separated by the supermassive black hole's tidal field. For binaries in the S-cluster region of the Milky Way, IMBHs drive the binaries to merge in up to 1%–6% of cases, assuming five IMBHs within 5 pc of mass 10⁴ ${M}_{\odot }$ each. Observations of binaries in the Galactic center may strongly constrain the population of IMBHs therein.

Publication status:: Published

Peer review status:: Peer reviewed

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APA Style

Deme, B., Meiron, Y., & Kocsis, B. (2020). Intermediate-mass black holes' effects on compact object binaries . The Astrophysical Journal, 892(2).

MLA Style

Deme, B., et al. “Intermediate-Mass Black Holes' Effects on Compact Object Binaries .” The Astrophysical Journal, vol. 892, no. 2, IOP Publishing, 2020.

Chicago Style

Deme, B, Y Meiron, and B Kocsis. 2020. “Intermediate-Mass Black Holes' Effects on Compact Object Binaries .” The Astrophysical Journal 892 (2).
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Files:: 0000_Deme_2020_ApJ_892_130.pdf

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Publisher copy:: 10.3847/1538-4357/ab7921

Authors

+ Deme, B More by this author

Role:: Author

+ Meiron, Y More by this author

Role:: Author

+ Kocsis, B More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Theoretical Physics
Oxford college:: St Hugh's College
Role:: Author
ORCID:: 0000-0002-4865-7517

Publisher:: IOP Publishing
Journal:: The Astrophysical Journal More from this journal
Volume:: 892
Issue:: 2
Article number:: 130
Publication date:: 2020-04-06
Acceptance date:: 2020-02-21
DOI:: 10.3847/1538-4357/ab7921
EISSN:: 1538-4357
ISSN:: 0004-637X

Language:: English
Keywords:: galactic center

intermediate-mass black holes

FFR
Pubs id:: 1128023
Local pid:: pubs:1128023
Deposit date:: 2020-08-24

Terms of use

Copyright holder:: The American Astronomical Society.
Copyright date:: 2020
Rights statement:: ©2020. The American Astronomical Society.
Notes:: Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

Licence:: CC Attribution (CC BY)

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