Binary black hole mergers in the first Advanced LIGO observing run

LIGO Scientific Collaboration and Virgo Collaboration

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The first observational run of the Advanced LIGO detectors, from September 12, 2015 to January 19, 2016, saw the first detections of gravitational waves from binary black hole mergers. In this paper, we present full results from a search for binary black hole merger signals with total masses up to 100M· and detailed implications from our observations of these systems. Our search, based on general-relativistic models of gravitational-wave signals from binary black hole systems, unambiguously identified two signals, GW150914 and GW151226, with a significance of greater than 5s over the observing period. It also identified a third possible signal, LVT151012, with substantially lower significance and with an 87% probability of being of astrophysical origin. We provide detailed estimates of the parameters of the observed systems. Both GW150914 and GW151226 provide an unprecedented opportunity to study the two-body motion of a compact-object binary in the large velocity, highly nonlinear regime. We do not observe any deviations from general relativity, and we place improved empirical bounds on several highorder post-Newtonian coefficients. From our observations, we infer stellar-mass binary black hole merger rates lying in the range 9-240 Gpc-3 yr-1. These observations are beginning to inform astrophysical predictions of binary black hole formation rates and indicate that future observing runs of the Advanced detector network will yield many more gravitational-wave detections.

Original languageEnglish
Article number041015
Number of pages36
JournalPhysical Review X
Volume6
Issue number4
DOIs
Publication statusPublished - 2016

Cite this

LIGO Scientific Collaboration and Virgo Collaboration. / Binary black hole mergers in the first Advanced LIGO observing run. In: Physical Review X. 2016 ; Vol. 6, No. 4.
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title = "Binary black hole mergers in the first Advanced LIGO observing run",
abstract = "The first observational run of the Advanced LIGO detectors, from September 12, 2015 to January 19, 2016, saw the first detections of gravitational waves from binary black hole mergers. In this paper, we present full results from a search for binary black hole merger signals with total masses up to 100M· and detailed implications from our observations of these systems. Our search, based on general-relativistic models of gravitational-wave signals from binary black hole systems, unambiguously identified two signals, GW150914 and GW151226, with a significance of greater than 5s over the observing period. It also identified a third possible signal, LVT151012, with substantially lower significance and with an 87{\%} probability of being of astrophysical origin. We provide detailed estimates of the parameters of the observed systems. Both GW150914 and GW151226 provide an unprecedented opportunity to study the two-body motion of a compact-object binary in the large velocity, highly nonlinear regime. We do not observe any deviations from general relativity, and we place improved empirical bounds on several highorder post-Newtonian coefficients. From our observations, we infer stellar-mass binary black hole merger rates lying in the range 9-240 Gpc-3 yr-1. These observations are beginning to inform astrophysical predictions of binary black hole formation rates and indicate that future observing runs of the Advanced detector network will yield many more gravitational-wave detections.",
author = "K Ackley and G Ashton and P.D. Lasky and Y. Levin and S. Qiu and L. Sammut and E. Thrane and Xingjiang Zhu and Smith, {Rory James} and {LIGO Scientific Collaboration and Virgo Collaboration} and Ilya Mandel",
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LIGO Scientific Collaboration and Virgo Collaboration 2016, 'Binary black hole mergers in the first Advanced LIGO observing run' Physical Review X, vol. 6, no. 4, 041015. https://doi.org/10.1103/PhysRevX.6.041015

Binary black hole mergers in the first Advanced LIGO observing run. / LIGO Scientific Collaboration and Virgo Collaboration.

In: Physical Review X, Vol. 6, No. 4, 041015, 2016.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Ashton, G

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AU - Levin, Y.

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AU - Sammut, L.

AU - Thrane, E.

AU - Zhu, Xingjiang

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AU - LIGO Scientific Collaboration and Virgo Collaboration

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