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Detecting Supermassive Black Hole-induced Binary Eccentricity Oscillations with LISA

Hoang, Bao-Minh and Naoz, Smadar and Kocsis, Bence and Farr, Will M. and McIver, Jessica (2019) Detecting Supermassive Black Hole-induced Binary Eccentricity Oscillations with LISA. Astrophysical Journal Letters, 875 (2). Art. No. L31. ISSN 2041-8213. doi:10.3847/2041-8213/ab14f7.

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Stellar-mass black hole binaries (BHBs) near supermassive black holes (SMBH) in galactic nuclei undergo eccentricity oscillations due to gravitational perturbations from the SMBH. Previous works have shown that this channel can contribute to the overall BHB merger rate detected by the Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo Interferometer. Significantly, the SMBH gravitational perturbations on the binary's orbit may produce eccentric BHBs which are expected to be visible using the upcoming Laser Interferometer Space Antenna (LISA) for a large fraction of their lifetime before they merge in the LIGO/Virgo band. For a proof of concept, we show that the eccentricity oscillations of these binaries can be detected with LISA for BHBs in the local universe up to a few megaparsecs, with observation periods shorter than the mission lifetime, thereby disentangling this merger channel from others. The approach presented here is straightforward to apply to a wide variety of compact object binaries with a tertiary companion.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Hoang, Bao-Minh0000-0003-0992-0033
Naoz, Smadar0000-0002-9802-9279
Kocsis, Bence0000-0002-4865-7517
Farr, Will M.0000-0003-1540-8562
McIver, Jessica0000-0003-0316-1355
Additional Information:© 2019 The American Astronomical Society. Received 2019 March 1; revised 2019 March 31; accepted 2019 April 1; published 2019 April 24. B.M.H. and S.N. acknowledge the partial support of NASA grant No. 80NSSC19K0321. S.N. also thanks Howard and Astrid Preston for their generous support. This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program under grant agreement No. 638435 (GalNUC) and by the Hungarian National Research, Development, and Innovation Office grant NKFIH KH-125675 (to B.K.).
Funding AgencyGrant Number
European Research Council (ERC)638435
National Research, Development, and Innovation Office (Hungary)KH-125675
Subject Keywords:galaxies: nuclei – Galaxy: center – gravitational waves – quasars: supermassive black holes – stars: black holes – stars: kinematics and dynamics
Issue or Number:2
Record Number:CaltechAUTHORS:20190424-142918708
Persistent URL:
Official Citation:Bao-Minh Hoang et al 2019 ApJL 875 L31
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:94944
Deposited By: Tony Diaz
Deposited On:24 Apr 2019 21:35
Last Modified:16 Nov 2021 17:09

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