Projects per year
On 2017 June 8 at 02:01:16.49 UTC, a gravitational-wave (GW) signal from the merger of two stellar-mass black holes was observed by the two Advanced Laser Interferometer Gravitational-Wave Observatory detectors with a network signal-to-noise ratio of 13. This system is the lightest black hole binary so far observed, with component masses of 12+7-2M• and 7+2-2M• (90% credible intervals). These lie in the range of measured black hole masses in low-mass X-ray binaries, thus allowing us to compare black holes detected through GWs with electromagnetic observations. The source's luminosity distance is 340+140-140Mpc, corresponding to redshift 0.07+0.03-0.03. We verify that the signal waveform is consistent with the predictions of general relativity.
- gravitational waves
- black holes
Abbott, B. P., Birney, R., Jawahar, S., Lockerbie, N. A., Reid, S., Tokmakov, K. V., LIGO Scientific Collaboration, & Virgo Collaboration (2017). GW170608: observation of a 19 solar-mass binary black hole coalescence. Astrophysical Journal Letters, 851(2), 1-11. https://doi.org/10.3847/2041-8213/aa9f0c