On September 14, 2015 at 09:50:45 UTC the two detectors of the Laser Interferometer Gravitational-Wave Observatory simultaneously observed a transient gravitational-wave signal. The signal sweeps upwards in frequency from 35 to 250 Hz with a peak gravitational-wave strain of 1.0 × 10−21. It matches the waveform predicted by general relativity for the inspiral and merger of a pair of black holes and the ringdown of the resulting single black hole. The signal was observed with a matched-filter signal-to-noise ratio of 24 and a false alarm rate estimated to be less than 1 event per 203 000 years, equivalent to a significance greater than5.1σ.Thesourceliesataluminositydistanceof410þ160 Mpccorrespondingtoaredshiftz1⁄40.09þ0.03. −180 −0.04 In the source frame, the initial black hole masses are 36þ5M and 29þ4M , and the final black hole mass is −4⊙ −4⊙ 62þ4M , with 3.0þ0.5M c2 radiated in gravitational waves. All uncertainties define 90% credible intervals. −4 ⊙ −0.5 ⊙ These observations demonstrate the existence of binary stellar-mass black hole systems. This is the first direct detection of gravitational waves and the first observation of a binary black hole merger.

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Observation of gravitational waves from a binary black hole merger / Abbott, B.P., Abbott, R., Abbott, T.D., Abernathy, M.R., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, R.X., Adya, V.B., Affeldt, C., Agathos, M., Agatsuma, K., Aggarwal, N., Aguiar, O.D., Aiello, L., Ain, A., Ajith, P., Allen, B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 116:6(2016), p. 061102. [10.1103/PhysRevLett.116.061102]

Observation of gravitational waves from a binary black hole merger

Di Pace, S.;Di Palma, I.;Drago, M.;FRASCA, Sergio;Majorana, E.;Mangano, V.;MEZZANI, FEDERICA;Pannarale, F.;PICCINNI, ORNELLA JULIANA;RAPAGNANI, Piero;RICCI, Fulvio;Salemi, F.;CASENTINI, CLAUDIO;COLLA, ALBERTO;CONTE, ANDREA;NATICCHIONI, LUCA;LEACI, PAOLA;Di Giovanni, M.
2016

Abstract

On September 14, 2015 at 09:50:45 UTC the two detectors of the Laser Interferometer Gravitational-Wave Observatory simultaneously observed a transient gravitational-wave signal. The signal sweeps upwards in frequency from 35 to 250 Hz with a peak gravitational-wave strain of 1.0 × 10−21. It matches the waveform predicted by general relativity for the inspiral and merger of a pair of black holes and the ringdown of the resulting single black hole. The signal was observed with a matched-filter signal-to-noise ratio of 24 and a false alarm rate estimated to be less than 1 event per 203 000 years, equivalent to a significance greater than5.1σ.Thesourceliesataluminositydistanceof410þ160 Mpccorrespondingtoaredshiftz1⁄40.09þ0.03. −180 −0.04 In the source frame, the initial black hole masses are 36þ5M and 29þ4M , and the final black hole mass is −4⊙ −4⊙ 62þ4M , with 3.0þ0.5M c2 radiated in gravitational waves. All uncertainties define 90% credible intervals. −4 ⊙ −0.5 ⊙ These observations demonstrate the existence of binary stellar-mass black hole systems. This is the first direct detection of gravitational waves and the first observation of a binary black hole merger.
2016
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Physics and Astronomy (all)
01 Pubblicazione su rivista::01a Articolo in rivista
Observation of gravitational waves from a binary black hole merger / Abbott, B.P., Abbott, R., Abbott, T.D., Abernathy, M.R., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, R.X., Adya, V.B., Affeldt, C., Agathos, M., Agatsuma, K., Aggarwal, N., Aguiar, O.D., Aiello, L., Ain, A., Ajith, P., Allen, B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 116:6(2016), p. 061102. [10.1103/PhysRevLett.116.061102]
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Note: Observation of Gravitational Waves from a Binary Black Hole Merger
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/928237
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