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 less than or similar to 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(circle dot) and 25.3(-4.2)(+2.8) M-circle dot (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.

Abbott, B.p., Abbott, R., Abbott, T.d., Acernese, F., Ackley, K., Adams, C., et al. (2017). GW170814: a three-detector observation of gravitational waves from a binary black hole coalescence. PHYSICAL REVIEW LETTERS, 119(14) [10.1103/PhysRevLett.119.141101].

GW170814: a three-detector observation of gravitational waves from a binary black hole coalescence

Fafone, V.;Lorenzini, M.;
2017-01-01

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 less than or similar to 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(circle dot) and 25.3(-4.2)(+2.8) M-circle dot (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.
2017
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/01 - FISICA SPERIMENTALE
English
Con Impact Factor ISI
Abbott, B.p., Abbott, R., Abbott, T.d., Acernese, F., Ackley, K., Adams, C., et al. (2017). GW170814: a three-detector observation of gravitational waves from a binary black hole coalescence. PHYSICAL REVIEW LETTERS, 119(14) [10.1103/PhysRevLett.119.141101].
Abbott, Bp; Abbott, R; Abbott, Td; Acernese, F; Ackley, K; Adams, C; Adams, T; Addesso, P; Adhikari, Rx; Adya, Vb; Affeldt, C; Afrough, M; Agarwal, B;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/213058
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