Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/106006
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Type: Journal article
Title: GW170104: Observation of a 50-Solar-Mass Binary Black Hole Coalescence at Redshift 0.2
Author: Abbott, B.
Abbott, R.
Abbott, T.
Acernese, F.
Ackley, K.
Adams, C.
Adams, T.
Addesso, P.
Adhikari, R.
Adya, V.
Affeldt, C.
Afrough, M.
Agarwal, B.
Agathos, M.
Agatsuma, K.
Aggarwal, N.
Aguiar, O.
Aiello, L.
Ain, A.
Ajith, P.
et al.
Citation: Physical Review Letters, 2017; 118(22):221101-1-221101-17
Publisher: American Physical Society
Issue Date: 2017
ISSN: 0031-9007
1079-7114
Statement of
Responsibility: 
B. P. Abbott ... H. Cao ... M. R. Ganija ... W. Kim ... E. J. King ... J. Munch ... D. J. Ottaway ... P. J. Veitch ... et al. (LIGO Scientific and Virgo Collaboration)
Abstract: We describe the observation of GW170104, a gravitational-wave signal produced by the coalescence of a pair of stellar-mass black holes. The signal was measured on January 4, 2017 at 10∶11:58.6 UTC by the twin advanced detectors of the Laser Interferometer Gravitational-Wave Observatory during their second observing run, with a network signal-to-noise ratio of 13 and a false alarm rate less than 1 in 70 000 years. The inferred component black hole masses are 31.2+8.4−6.0M⊙ and 19.4+5.3−5.9M⊙ (at the 90% credible level). The black hole spins are best constrained through measurement of the effective inspiral spin parameter, a mass-weighted combination of the spin components perpendicular to the orbital plane, χeff=−0.12+0.21−0.30. This result implies that spin configurations with both component spins positively aligned with the orbital angular momentum are disfavored. The source luminosity distance is 880+450−390  Mpc corresponding to a redshift of z=0.18+0.08−0.07. We constrain the magnitude of modifications to the gravitational-wave dispersion relation and perform null tests of general relativity. Assuming that gravitons are dispersed in vacuum like massive particles, we bound the graviton mass to mg≤7.7×10−²³  eV/c². In all cases, we find that GW170104 is consistent with general relativity.
Keywords: LIGO Scientific and Virgo Collaboration
Description: Published 1 June 2017
Rights: Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
RMID: 0030071280
DOI: 10.1103/PhysRevLett.118.221101
Appears in Collections:IPAS publications

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