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Journal Article

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

##### MPS-Authors
/persons/resource/persons192149

Capano,  Collin
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons214778

Nitz,  Alexander H.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

##### External Ressource
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##### Fulltext (public)

2008.02248.pdf
(Preprint), 2MB

PhysRevD.102.124070.pdf
(Publisher version), 2MB

##### Supplementary Material (public)
There is no public supplementary material available
##### Citation

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

Cite as: http://hdl.handle.net/21.11116/0000-0006-D7DC-0
##### 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 $\ell = m = 2$ mode. Using these events, we search for physics beyond GR by allowing the source parameters measured from the sub-dominant harmonics to deviate from that of the dominant mode. All results are consistent with GR. We constrain the chirp mass as measured by the $\ell = m = 3$ mode to be within $0_{-4}^{+6}\%$ of the dominant mode when we allow both the masses and spins of the sub-dominant modes to deviate. If we allow only the mass parameters to deviate, we constrain the chirp mass of the $\ell = m = 3$ mode to be within $\pm1\%$ of the expected value from GR.