GW151226: Observation of Gravitational Waves from a 22-Solar-Mass Binary Black Hole Coalescence - Ondes Gravitationnelles
Article Dans Une Revue Physical Review Letters Année : 2016

GW151226: Observation of Gravitational Waves from a 22-Solar-Mass Binary Black Hole Coalescence

B.P. Abbott
  • Fonction : Auteur
M. Was
J. Degallaix
N. Arnaud
J. Casanueva Diaz
  • Fonction : Auteur
N. Leroy
François Bondu

Résumé

We report the observation of a gravitational-wave signal produced by the coalescence of two stellar-mass black holes. The signal, GW151226, was observed by the twin detectors of the Laser Interferometer Gravitational-Wave Observatory (LIGO) on December 26, 2015 at 03:38:53 UTC. The signal was initially identified within 70 s by an online matched-filter search targeting binary coalescences. Subsequent off-line analyses recovered GW151226 with a network signal-to-noise ratio of 13 and a significance greater than 5 σ. The signal persisted in the LIGO frequency band for approximately 1 s, increasing in frequency and amplitude over about 55 cycles from 35 to 450 Hz, and reached a peak gravitational strain of 3.4+0.7−0.9×10−22. The inferred source-frame initial black hole masses are 14.2+8.3−3.7M⊙ and 7.5+2.3−2.3M⊙ and the final black hole mass is 20.8+6.1−1.7M⊙. We find that at least one of the component black holes has spin greater than 0.2. This source is located at a luminosity distance of 440+180−190 Mpc corresponding to a redshift 0.09+0.03−0.04. All uncertainties define a 90 % credible interval. This second gravitational-wave observation provides improved constraints on stellar populations and on deviations from general relativity.
Fichier principal
Vignette du fichier
PhysRevLett.116.241103 (1 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

in2p3-01332514 , version 1 (10-01-2024)

Identifiants

Citer

B.P. Abbott, T. Adams, R. Bonnand, D. Buskulic, M. Ducrot, et al.. GW151226: Observation of Gravitational Waves from a 22-Solar-Mass Binary Black Hole Coalescence. Physical Review Letters, 2016, 116 (24), pp.241103. ⟨10.1103/PhysRevLett.116.241103⟩. ⟨in2p3-01332514⟩
39 Consultations
0 Téléchargements

Altmetric

Partager

More