Physical Review Letters· 2017Q1
GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
- 2,176citations
- Q1SCImago
- 2017year
Short summary
The Advanced Virgo and two Advanced LIGO detectors simultaneously detected gravitational waves from two merging black holes (30.5 and 25.3 solar masses) 540 Mpc away, with a false alarm rate of less than 1 in 27,000 years.
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Key points
- Gravitational waves from two merging black holes detected by a three-detector network (LIGO-Virgo) on August 14, 2017.
- Inferred black hole masses: 30.5_{-3.0}^{+5.7}M_{⊙} and 25.3_{-4.2}^{+2.8}M_{⊙}.
- Source located at a luminosity distance of 540_{-210}^{+130} Mpc (redshift z=0.11_{-0.04}^{+0.03}).
- Three-detector network reduced sky localization area from 1160 deg² to 60 deg².
- Enabled testing of gravitational-wave polarizations and new phenomenological tests of gravity.
AI-generated from the title and abstract; the full text is not read.
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_{-3.0}^{+5.7}M_{⊙} and 25.3_{-4.2}^{+2.8}M_{⊙} (at the 90% credible level). The luminosity distance of the source is 540_{-210}^{+130} Mpc, corresponding to a redshift of z=0.11_{-0.04}^{+0.03}. A network of three detectors improves the sky localization of the source, reducing the area of the 90% credible region from 1160 deg^{2} using only the two LIGO detectors to 60 deg^{2} 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.
The authors' abstract, as published at the source. Physical Review Letters, 2017 · DOI ↗
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Field: Astronomy and Astrophysics
Astronomy and AstrophysicsPhysics and Astronomy