GW170608: Observation of a 19 Solar-mass Binary Black Hole Coalescence

the LIGO Scientific Collaboration and the Virgo Collaboration

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Abstract

On 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 -2M7+2 -2 (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 -140corresponding to redshift -0.07+0.030 03. We verify thatthe signal waveform is consistent with the predictions of general relativity.

Original languageEnglish
Article numberL35
Number of pages11
JournalThe Astrophysical Journal Letters
Volume851
Issue number2
DOIs
Publication statusPublished - 20 Dec 2017

Keywords

  • binaries: general
  • gravitational waves
  • stars: black holes

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