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Title: GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral

Journal Article · · Physical Review Letters
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On August 17, 2017 at 1241:04 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 × 10 4 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 $$^{+0.04}_{–0.01}$$ M. The source was localized within a sky region of 28 deg2 (90% probability) and had a luminosity distance of 40$$^{+8}_{–14}$$ 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.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE Office of Science (SC)
Contributing Organization:
LIGO Scientific Collaboration and Virgo Collaboration
OSTI ID:
1544363
Journal Information:
Physical Review Letters, Vol. 119, Issue 16; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4064 works
Citation information provided by
Web of Science

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