Sengupta, Anand et al.Anand et al.Sengupta2025-08-302025-08-302017-12-2010.3847/2041-8213/aa9f0c2-s2.0-85039717118https://repository.iitgn.ac.in/handle/IITG2025/22985On 2017 June 8 at 02:01:16.49 UTC, a gravitational-wave (GW) signal from the merger of two stellar-mass blackholes was observed by the two Advanced Laser Interferometer Gravitational-Wave Observatory detectors with anetwork signal-to-noise ratio of 13. This system is the lightest black hole binary so far observed, with componentmasses of 12⁺⁷ <inf>-2</inf>M<inf>⊙</inf>7⁺² <inf>-2</inf> (90% credible intervals). These lie in the range of measured black hole masses inlow-mass X-ray binaries, thus allowing us to compare black holes detected through GWs with electromagneticobservations. The source's luminosity distance is 340⁺¹⁴⁰ <inf>-140</inf>corresponding to redshift -0.07^+0.030 <inf>03.</inf> We verify thatthe signal waveform is consistent with the predictions of general relativity.en-UStruebinaries: general | gravitational waves | stars: black holesArticlehttps://iopscience.iop.org/article/10.3847/2041-8213/aa9f0c/pdf2041821320 December 20171013L35983WOS:000418360100001