Stellar Collision IMF Uncertainty

Background: Massive star clusters are expected to form intermediate-mass black holes through purely stellar collision channels if their collision timescale is short enough.

Question / Future Work: The precise role of the initial mass function (IMF) on the black hole formation efficiency ($\epsilon_{BH}$) in purely stellar collision scenarios requires further refinement, as the current framework relies on fitting relations validated against local systems, though some uncertainty remains due to IMF variations.