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GW170104: Observation of a 50-Solar-Mass Binary Black Hole Coalescence at Redshift 0.2статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 8 августа 2017 г.
- Авторы: Braginsky V.B., Bilenko I.A., Gorodetsky M.L., Khalili F.Y., Prokhorov L.G., Mitrofanov V.P., Strigin S.E., Vyatchanin S.P., LIGO Scientific Collaboration
- Журнал: Physical Review Letters
- Том: 118
- Номер: 22
- Год издания: 2017
- Издательство: American Physical Society
- Местоположение издательства: United States
- Первая страница: 221101
- Последняя страница:
- DOI: 10.1103/PhysRevLett.118.221101
- Аннотация: 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 + 8.4 − 6.0 M ⊙ and 19. 4 + 5.3 − 5.9 M ⊙ (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, χ eff = − 0.1 2 + 0.21 − 0.30 . This result implies that spin configurations with both component spins positively aligned with the orbital angular momentum are disfavored. The source luminosity distance is 88 0 + 450 − 390 Mpc corresponding to a redshift of z = 0.1 8 + 0.08 − 0.07 . 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 m g ≤ 7.7 × 10 − 23 eV / c 2 . In all cases, we find that GW170104 is consistent with general relativity.
- Добавил в систему: Стрыгин Сергей Евгеньевич