Binary black hole spectroscopy : A no-hair test of GW190814 and GW190412

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Capano, C.D.; Nitz, A.H.: Binary black hole spectroscopy: A no-hair test of GW190814 and GW190412. In: Physical Review D 102 (2020), Nr. 12, 124070. DOI: https://doi.org/10.1103/PhysRevD.102.124070

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Abstract: 
Gravitational waves provide a window to probe general relativity (GR) under extreme conditions. The recent observations of GW190412 and GW190814 are unique high-mass-ratio mergers that enable the observation of gravitational-wave harmonics beyond the dominant (ℓ,m)=(2,2) mode. Using these events, we search for physics beyond GR by allowing the source parameters measured from the subdominant harmonics to deviate from that of the dominant mode. All results are consistent with GR. We constrain the chirp mass as measured by the (ℓ,m)=(3,3) mode to be within 0-3+5% of the dominant mode when we allow both the masses and spins of the subdominant modes to deviate. If we allow only the mass parameters to deviate, we constrain the chirp mass of the (3,3) mode to be within ±1% of the expected value from GR. © 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. Open access publication funded by the Max Planck Society.
License of this version: CC BY 4.0 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2020
Appears in Collections:An-Institute

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1 image of flag of Germany Germany 33 62.26%
2 image of flag of China China 10 18.87%
3 image of flag of United States United States 5 9.43%
4 image of flag of Czech Republic Czech Republic 2 3.77%
5 image of flag of Vietnam Vietnam 1 1.89%
6 image of flag of No geo information available No geo information available 1 1.89%
7 image of flag of Japan Japan 1 1.89%

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