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1826189592032706560
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MIT
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© 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.
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2024-09-23T08:18:04Z
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Article
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mit-1721.1/133568
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| institution |
Massachusetts Institute of Technology
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| language |
English
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2024-09-23T08:18:04Z
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2021
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| publisher |
American Physical Society (APS)
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dspace
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| spelling |
mit-1721.1/1335682022-09-23T12:08:43Z GW190412: Observation of a binary-black-hole coalescence with asymmetric masses © 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. 2021-10-27T19:53:34Z 2021-10-27T19:53:34Z 2020 2021-07-08T18:44:59Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/133568 en 10.1103/PHYSREVD.102.043015 Physical Review D Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf American Physical Society (APS) APS
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| spellingShingle |
GW190412: Observation of a binary-black-hole coalescence with asymmetric masses
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| title |
GW190412: Observation of a binary-black-hole coalescence with asymmetric masses
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| title_full |
GW190412: Observation of a binary-black-hole coalescence with asymmetric masses
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| title_fullStr |
GW190412: Observation of a binary-black-hole coalescence with asymmetric masses
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| title_full_unstemmed |
GW190412: Observation of a binary-black-hole coalescence with asymmetric masses
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| title_short |
GW190412: Observation of a binary-black-hole coalescence with asymmetric masses
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| title_sort |
gw190412 observation of a binary black hole coalescence with asymmetric masses
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| url |
https://hdl.handle.net/1721.1/133568
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