GW170814
GW170814 was a gravitational wave signal from two merging black holes, detected by the LIGO and Virgo observatories on 14 August 2017. On 27 September 2017, the LIGO and Virgo collaborations announced the observation of the signal, the fourth confirmed event after GW150914, GW151226 and GW170104. It was the first binary black hole merger detected by LIGO and Virgo together.
Key facts
- Astronomical event.image
- GW170814_signal.png
- Astronomical event.constellation
- Eridanus
- Astronomical event.energy
- ≈ × c2
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6 sectionsContents
- Event detection
- Astrophysical origin
- Implications for general relativity
- See also
- References
- External links
GW170814 was a gravitational wave signal from two merging black holes, detected by the LIGO and Virgo observatories on 14 August 2017. On 27 September 2017, the LIGO and Virgo collaborations announced the observation of the signal, the fourth confirmed event after GW150914, GW151226 and GW170104. It was the first binary black hole merger detected by LIGO and Virgo together.
==Event detection== thumb|left|250px|Estimated location of GW170814. The signal was detected at 10:30:43 UTC. The Livingston detector was the first to receive the signal, followed by the Hanford detector 8 milliseconds later and Virgo received the signal 14 milliseconds after Livingston. The detection in all three detectors lead to a very accurate estimate of the position of the source, with a 90% credible region of just 60 deg2, a factor 20 times more accurate than before.