Constraints on Dark Matter Models from Supermassive Black Hole Evolution

2025/09/08 by John Ellis, Malcolm Fairbairn, Ellis, John +5
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Relativity and Gravitational Theory

paper · doi:10.48550/arxiv.2509.06955

Abstract

A semianalytical model for the evolution of galaxies and supermassive black holes within the cold dark matter paradigm has been shown to yield stellar-black hole mass relations that reproduce both the James Webb Space Telescope and pre-Webb telescope observations. Either fuzzy or warm dark matter would suppress the formation of the smaller galactic halos that play important roles in the cold dark matter fit to the high-redshift supermassive black hole data. Our analysis of the stellar-black hole mass relation disfavors fuzzy dark matter fields with masses <2.0×10^-20 eV and warm dark matter particles with masses <7.2 keV, both at the 95% confidence level.

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Related

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