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  Origin and Implications of high eccentricities in massive black hole binaries at sub-pc scales

Rödig, C., & Sesana, A. (2012). Origin and Implications of high eccentricities in massive black hole binaries at sub-pc scales. Journal of Physics: Conference Series, 363: 012035.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-5E2C-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-5E2E-7
Genre: Conference Paper

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1111.3742 (Preprint), 236KB
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 Creators:
Rödig, Constanze1, Author              
Sesana, Alberto1, Author              
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

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Free keywords: Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO,General Relativity and Quantum Cosmology, gr-qc
 Abstract: We outline the eccentricity evolution of sub-parsec massive black hole binaries (MBHBs) forming in galaxy mergers. In both stellar and gaseous environments, MBHBs are expected to grow large orbital eccentricities before they enter the gravitational wave (GW) observational domain. We re--visit the predicted eccentricities detectable by space based laser interferometers (as the proposed ELISA/NGO) for both environments. Close to coalescence, many MBHBs will still maintain detectable eccentricities, spanning a broad range from <10^{-5} up to <~ 0.5. Stellar and gas driven dynamics lead to distinct distributions, with the latter favoring larger eccentricities. At larger binary separations, when emitted GWs will be observed by pulsar timing arrays (PTAs), the expected eccentricities are usually quite large, in the range 0.01-0.7, which poses an important issue for signal modelling and detection algorithms. In this window, large eccentricities also have implications on proposed electromagnetic counterparts to the GW signal, which we briefly review.

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 Dates: 2011-11-162012
 Publication Status: Published in print
 Pages: AMALDI9 proceedings, submitted to CQG ; 10 Pages 2 Figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1111.3742
DOI: 10.1088/1742-6596/363/1/012035
 Degree: -

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Title: 9th Edoardo Amaldi conference on gravitational waves (Amaldi 9) and the 2011 Numerical Relativity – Data Analysis meeting (NRDA 2011)
Place of Event: Cardiff University
Start-/End Date: 2011-07-10 - 2011-07-15

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Title: Journal of Physics: Conference Series
Source Genre: Journal
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Publ. Info: Bristol : IOP Publ.
Pages: - Volume / Issue: 363 Sequence Number: 012035 Start / End Page: - Identifier: ISSN: 1742-6588
CoNE: /journals/resource/111097776606042