Persistence of post-Newtonian amplitude structure in binary black hole mergers
Published in Physical Review D, 2026
This paper uses numerical relativity simulations to test the effectiveness of post-Newtonian formalism beyond its formal regime of applicability. We retain the functional form of post-Newtonian mode amplitudes tod escribe mode amplitudes near the merger. This study extends previous work published in Classical and Quantum Gravity (DOI: 10.1088/1361-6382/ab6a21). Our results deepen our understanding of the structure of gravitational waveforms near merger, laying groundwork for simple waveform modeling in this regime. Furthermore, we compare our results across three numerical relativity catalogs, providing a comprehensive consistency check not previously carried out in the literature.
Recommended citation: Cáceres-Barbosa, V. (2026). "Persistence of post-Newtonian amplitude structure in binary black hole mergers." Phys. Rev. D, 113, 084032
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