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Medientyp: Sonstige Veröffentlichung; E-Artikel Titel: GW170104: Observation of a 50-Solar-Mass Binary Black Hole Coalescence at Redshift 0.2 Beteiligte: Abbott, B.P. [VerfasserIn]; Abbott, R. [VerfasserIn]; Abbott, T.D. [VerfasserIn]; Acernese, F. [VerfasserIn]; Ackley, K. [VerfasserIn]; LIGO Scientific Collaboration [VerfasserIn]; Virgo Collaboration [VerfasserIn] Erschienen: College Park, MD : American Physical Society, 2017 Erschienen in: Physical Review Letters 118 (2017), Nr. 22 Ausgabe: published Version Sprache: Englisch DOI: https://doi.org/10.15488/2101; https://doi.org/10.1103/PhysRevLett.118.221101 ISSN: 0031-9007 Schlagwörter: Gravitationswelle ; Laser interferometer gravitational-wave observatories ; Advanced detector ; General Relativity ; Massive particles ; Gravity waves ; Relativity ; Stellar-mass black holes ; Spin configurations ; Gravitation ; Gravitational-wave signals ; Stars ; Interferometers ; Orbital angular momentum ; Gravitational effects ; Laser interferometry ; Testing ; Signal to noise ratio Entstehung: Anmerkungen: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen. Beschreibung: We describe the observation of GW170104, a gravitational-wave signal produced by the coalescence of a pair of stellar-mass black holes. The signal was measured on January 4, 2017 at 10 11:58.6 UTC by the twin advanced detectors of the Laser Interferometer Gravitational-Wave Observatory during their second observing run, with a network signal-to-noise ratio of 13 and a false alarm rate less than 1 in 70 000 years. The inferred component black hole masses are 31.2-6.0+8.4M' and 19.4-5.9+5.3M (at the 90% credible level). The black hole spins are best constrained through measurement of the effective inspiral spin parameter, a mass-weighted combination of the spin components perpendicular to the orbital plane, χeff=-0.12-0.30+0.21. This result implies that spin configurations with both component spins positively aligned with the orbital angular momentum are disfavored. The source luminosity distance is 880-390+450 Mpc corresponding to a redshift of z=0.18-0.07+0.08. We constrain the magnitude of modifications to the gravitational-wave dispersion relation and perform null tests of general relativity. Assuming that gravitons are dispersed in vacuum like massive particles, we bound the graviton mass to mg≤7.7×10-23 eV/c2. In all cases, we find that GW170104 is consistent with general relativity. © 2017 American Physical Society. Zugangsstatus: Freier Zugang Rechte-/Nutzungshinweise: Namensnennung (CC BY)