Testing the Kerr hypothesis beyond the quadrupole with GW241011
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866914464718127104 |
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| author | Das, Rimo Krishnendu, N. V. Saleem, M. Mishra, Chandra Kant Arun, K. G. |
| author_facet | Das, Rimo Krishnendu, N. V. Saleem, M. Mishra, Chandra Kant Arun, K. G. |
| contents | All multipole moments of a Kerr black hole are uniquely determined by its mass and spin. Gravitational wave observations can test this prediction by measuring spin-induced multipole moments imprinted on the inspiral phase of compact binary mergers. In this Letter, we show that the recently reported compact binary coalescence GW241011 enables a simultaneous test of deviations in the spin-induced quadrupole and octupole moments of the binary components from their black hole values. We find no evidence for deviations from the Kerr prediction and place the first constraints on spin-induced octupole moments of the compact binary. This approach complements tests of the Kerr nature of compact binary merger remnants based on quasinormal mode measurements in the ringdown phase. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_09828 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Testing the Kerr hypothesis beyond the quadrupole with GW241011 Das, Rimo Krishnendu, N. V. Saleem, M. Mishra, Chandra Kant Arun, K. G. General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena All multipole moments of a Kerr black hole are uniquely determined by its mass and spin. Gravitational wave observations can test this prediction by measuring spin-induced multipole moments imprinted on the inspiral phase of compact binary mergers. In this Letter, we show that the recently reported compact binary coalescence GW241011 enables a simultaneous test of deviations in the spin-induced quadrupole and octupole moments of the binary components from their black hole values. We find no evidence for deviations from the Kerr prediction and place the first constraints on spin-induced octupole moments of the compact binary. This approach complements tests of the Kerr nature of compact binary merger remnants based on quasinormal mode measurements in the ringdown phase. |
| title | Testing the Kerr hypothesis beyond the quadrupole with GW241011 |
| topic | General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2604.09828 |