articlePhysical Review LettersOct 16, 2017HYBRID OA

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

California Institute of Technology · Louisiana State University · +177 more institutions

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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 2.74−0.01+0.04M⊙. The source was localized within a sky region of 28 deg2 (90% probability) and had a…

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