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Cluster cores contain anomalously low amounts of baryonic matter, b/c "in the central regions [of galaxy clusters], the gas is repeatedly whipped up and smoothed out by passing galaxies" (daily galaxy 2011). And, shock-heating "sound waves" have been observed, in the ICM, in the cores of nearby clusters, e.g. Perseus, Virgo (Wikipedia). Such shock-waves could, conceivably, have been caused, by the "wakes" of galaxies passing through the cluster core.
Therefore, could "galactic stirring", of ICMs, inject sufficient heat, into the ICMs, to prevent "cooling collapse", i.e. to offset observed x-ray emissions of Lx ~ 300 MLsol - 300 GLsol (irwin) ?
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no "Cluster Cooling Flows" ?
radiating gas has heating source ?
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