GW170817 : Observation of gravitational waves from a binary neutron star inspiral
Abbott, B. P. and Birney, R. and Jawahar, S. and Lockerbie, N. A. and Reid, S. and Tokmakov, K. V., LIGO Scientific Collaboration, Virgo Collaboration (2017) GW170817 : Observation of gravitational waves from a binary neutron star inspiral. Physical Review Letters, 119 (16). 161101. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.119.161101)
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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+0.04−0.01M⊙. 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.
ORCID iDs
Abbott, B. P., Birney, R., Jawahar, S. ORCID: https://orcid.org/0000-0002-4945-691X, Lockerbie, N. A. ORCID: https://orcid.org/0000-0002-1678-3260, Reid, S. and Tokmakov, K. V. ORCID: https://orcid.org/0000-0002-2808-6593;-
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Item type: Article ID code: 62063 Dates: DateEvent16 October 2017Published26 September 2017AcceptedSubjects: Science > Physics Department: Faculty of Engineering > Biomedical Engineering
Faculty of Science > PhysicsDepositing user: Pure Administrator Date deposited: 17 Oct 2017 12:12 Last modified: 01 Nov 2024 18:21 URI: https://strathprints.strath.ac.uk/id/eprint/62063