Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/109356
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Type: Journal article
Title: GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
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; 119(16):161101-1-161101-18
Publisher: American Physical Society
Issue Date: 2017
ISSN: 0031-9007
1079-7114
Statement of
Responsibility: 
B. P. Abbott ... D. D. Brown ... 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: On August 17, 2017 at 12∶41:04 UTC the Advanced LIGO and Advanced Virgo gravitational-wave detectors made their first observation of a binary neutron star inspiral. The signal, GW170817, was detected with a combined signal-to-noise ratio of 32.4 and a false-alarm-rate estimate of less than one per 8.0 × 10⁴ years. We infer the component masses of the binary to be between 0.86 and 2.26 M⊙, in agreement with masses of known neutron stars. Restricting the component spins to the range inferred in binary neutron stars, we find the component masses to be in the range 1.17–1.60 M⊙, with the total mass of the system 2.74 þ0.04 −0.01M⊙. The source was localized within a sky region of 28 deg² (90% probability) and had a luminosity distance of 40 þ8 −14 Mpc, the closest and most precisely localized gravitational-wave signal yet. The association with the γ-ray burst GRB 170817A, detected by Fermi-GBM 1.7 s after the coalescence, corroborates the hypothesis of a neutron star merger and provides the first direct evidence of a link between these mergers and short γ-ray bursts. Subsequent identification of transient counterparts across the electromagnetic spectrum in the same location further supports the interpretation of this event as a neutron star merger. This unprecedented joint gravitational and electromagnetic observation provides insight into astrophysics, dense matter, gravitation, and cosmology.
Keywords: LIGO Scientific Collaboration and Virgo Collaboration
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: 0030076995
DOI: 10.1103/PhysRevLett.119.161101
Appears in Collections:IPAS publications

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