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GW190412: Observation of a binary-black-hole coalescence with asymmetric masses

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dc.date 2021-10-27T19:53:34Z
dc.date 2021-10-27T19:53:34Z
dc.date 2020
dc.date 2021-07-08T18:44:59Z
dc.date.accessioned 2023-03-01T18:11:52Z
dc.date.available 2023-03-01T18:11:52Z
dc.identifier https://hdl.handle.net/1721.1/133568
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/279117
dc.description © 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. We report the observation of gravitational waves from a binary-black-hole coalescence during the first two weeks of LIGO's and Virgo's third observing run. The signal was recorded on April 12, 2019 at 05â¶30â¶44 UTC with a network signal-to-noise ratio of 19. The binary is different from observations during the first two observing runs most notably due to its asymmetric masses: A ∼30 M⊙ black hole merged with a ∼8 M⊙ black hole companion. The more massive black hole rotated with a dimensionless spin magnitude between 0.22 and 0.60 (90% probability). Asymmetric systems are predicted to emit gravitational waves with stronger contributions from higher multipoles, and indeed we find strong evidence for gravitational radiation beyond the leading quadrupolar order in the observed signal. A suite of tests performed on GW190412 indicates consistency with Einstein's general theory of relativity. While the mass ratio of this system differs from all previous detections, we show that it is consistent with the population model of stellar binary black holes inferred from the first two observing runs.
dc.format application/pdf
dc.language en
dc.publisher American Physical Society (APS)
dc.relation 10.1103/PHYSREVD.102.043015
dc.relation Physical Review D
dc.rights Creative Commons Attribution 4.0 International license
dc.rights https://creativecommons.org/licenses/by/4.0/
dc.source APS
dc.title GW190412: Observation of a binary-black-hole coalescence with asymmetric masses
dc.type Article
dc.type http://purl.org/eprint/type/JournalArticle


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