Revealing the ${\chi }_{\mathrm{eff}}$-$q$ Correlation among Coalescing Binary Black Holes and Tentative Evidence for AGN-driven Hierarchical Mergers

Yin-Jie Li, Yuan-Zhu Wang, Shao-Peng Tang +2

The origin of the correlation between the effective spins (${\chi }_{\mathrm{eff}}$) and mass ratios ($q$) of LIGO-Virgo-KAGRA's binary black holes (BBHs) is still an open question. Motivated…