The Virgo and Perseus cluster have cool corusus and show unresolved 3.5 KeV radiation. The solution: In these centers only small black holes are pushed by external so called GABHs (Galaxy Anchor Black Holes) to be eaten by the central giant black hole.
See: Hitomi Collaboration. The quiescent intracluster medium in the core of the Perseus cluster, AND:https://www.researchgate.net/publication/377066296_6x9_2023-B-17-nieuw_Splitting-BH-BB-12
The Q-FFF Rigid String Theory says: (1) There is only one CONSTRUCTIVE Topological and Resilient TRANSFORMING STRING (Axion/vacuum Dark Energy building block ), forming direct after the Black Hole Splitting Big Bang. so called Travelling TADPOLE Black Hole based Filaments, expanding the Cosmic Lyman Alpha Structure. (2) A Raspberry Entangled 12x Mirror Copy Multiverse is Postulated as base for uncertainty (ER=EPR) and Libet's FREE VETO WILL . SO We live inside an exploded BH
