2025ApJ...990..160W

The discovery of supermassive black holes (SMBHs) at high redshifts has intensified efforts to understand their early formation and rapid growth during the cosmic dawn. Using a semi-analytical cosmological framework, we investigate the role of tidal disruption events (TDEs) involving Population III (Pop III) stars in driving the growth of heavy-seed black holes (10⁴-10⁶M_⊙). Our results indicate that Pop III TDEs significantly accelerate the growth of relatively lighter massive black holes (∼10⁴-10⁵M_⊙), allowing them to increase their mass by roughly an order of magnitude within the first 10 Myr. Cosmological evolution modeling further supports such Pop-III-TDE-driven growth scenarios being consistent with the formation pathways of observed luminous high-redshift quasars originating from seed black holes at 10 < z < 15. We also discuss future observational probes of these early-stage growth processes that future facilities, including space-based gravitational-wave observatories and infrared telescopes like JWST, could potentially conduct. These findings provide a clear observational framework to test the critical role of Pop III star interactions in the rapid buildup of SMBHs during the earliest epochs.