2023/11/15 by Hao Wang, Wang, Hao, Yuan-Chuan Zou +5
Physics and Astronomy · #Pulsars and Gravitational Waves Research #Astrophysical Phenomena and Observations #Laser-Plasma Interactions and Diagnostics
paper · pdf · doi:10.48550/arxiv.2311.08822
The orbital eccentricity plays a crucial role in shaping the dynamics of binary black hole (BBH) mergers. Remarkably, our recent findings reveal a universal oscillation in essential dynamic quantities: peak luminosity Lpeak, masses Mf, spins αf, and recoil velocity Vf of the final remnant black hole, as the initial eccentricity e0 undergoes variation. In this letter, by leveraging RIT's extensive numerical relativistic simulations of nonspinning eccentric orbital BBH mergers, we not only confirm the universal oscillation in peak amplitudes (including harmonic modes), similar to the oscillations observed in Lpeak, Mf, αf, and Vf, but also make the first discovery of a ubiquitous spiral-like internal fine structure that correlates Lpeak, Mf, αf, Vf, and peak amplitudes. This distinctive feature, which we term the "fingerprint" of eccentric orbital BBH mergers, carries important implications for unraveling the intricate dynamics and astrophysics associated with eccentric orbital BBH mergers.