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

Physical Review Letters

American Physical Society (APS)

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### Most cited references163

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### Planck2015 results

(2016)
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### Observation of Gravitational Waves from a Binary Black Hole Merger

On September 14, 2015 at 09:50:45 UTC the two detectors of the Laser Interferometer Gravitational-Wave Observatory simultaneously observed a transient gravitational-wave signal. The signal sweeps upwards in frequency from 35 to 250 Hz with a peak gravitational-wave strain of $$1.0 \times 10^{-21}$$. It matches the waveform predicted by general relativity for the inspiral and merger of a pair of black holes and the ringdown of the resulting single black hole. The signal was observed with a matched-filter signal-to-noise ratio of 24 and a false alarm rate estimated to be less than 1 event per 203 000 years, equivalent to a significance greater than 5.1 {\sigma}. The source lies at a luminosity distance of $$410^{+160}_{-180}$$ Mpc corresponding to a redshift $$z = 0.09^{+0.03}_{-0.04}$$. In the source frame, the initial black hole masses are $$36^{+5}_{-4} M_\odot$$ and $$29^{+4}_{-4} M_\odot$$, and the final black hole mass is $$62^{+4}_{-4} M_\odot$$, with $$3.0^{+0.5}_{-0.5} M_\odot c^2$$ radiated in gravitational waves. All uncertainties define 90% credible intervals.These observations demonstrate the existence of binary stellar-mass black hole systems. This is the first direct detection of gravitational waves and the first observation of a binary black hole merger.
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### Nucleosynthesis, neutrino bursts and γ-rays from coalescing neutron stars

(1989)
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### Author and article information

###### Affiliations
[1 ]LIGO Scientific Collaboration and Virgo Collaboration
###### Journal
PRLTAO
Physical Review Letters
Phys. Rev. Lett.
American Physical Society (APS)
0031-9007
1079-7114
October 2017
October 16 2017
: 119
: 16
10.1103/PhysRevLett.119.161101