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Abstract
On August 14, 2017 at 10∶30:43 UTC, the Advanced Virgo detector and the two Advanced LIGO detectors coherently observed a transient gravitational-wave signal produced by the coalescence of two stellar mass black holes, with a false-alarm rate of ≲1 in 27 000 years. The signal was observed with a three-detector network matched-filter signal-to-noise ratio of 18. The inferred masses of the initial black holes are 30.5+5.7−3.0M⊙ and 25.3+2.8−4.2M⊙ (at the 90% credible level). The luminosity distance of the source is 540+130−210 Mpc, corresponding to a redshift of z=0.11+0.03−0.04. A network of three detectors improves the sky localization of the source, reducing the area of the 90% credible region from 1160 deg2 using only the two LIGO detectors to 60 deg2 using all three detectors. For the first time, we can test the nature of gravitational-wave polarizations from the antenna response of the LIGO-Virgo network, thus enabling a new class of phenomenological tests of gravity.
Original language | English |
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Article number | 141101 |
Number of pages | 16 |
Journal | Physical Review Letters |
Volume | 119 |
Issue number | 14 |
DOIs | |
Publication status | Published - 6 Oct 2017 |
Keywords
- LIGO
- gravitational waves
- GW170814
- black holes
- gravitational-wave polarizations
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Dive into the research topics of 'GW170814: a three-detector observation of gravitational waves from a binary black hole coalescence'. Together they form a unique fingerprint.Projects
- 1 Finished
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Investigations in Gravitational Radiation
STFC Science and Technology Facilities Council
1/10/13 → 30/09/17
Project: Research