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arXiv · 1703.08553

Feedback by Massive Black Holes in Dwarf Galaxies

Joseph Silk
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Abstract

Could there be intermediate mass black holes in essentially all old dwarf galaxies? I argue that current observations of Active Galactic Nuclei in dwarfs allow such a radical hypothesis which provides early feedback and potentially provides a unifying explanation for many if not all of the apparent dwarf galaxy anomalies, such as the abundance, core-cusp, "too big to fail", ultra-faint and baryon-fraction issues. I describe the supporting arguments, which are largely circumstantial in nature, and discuss a number of tests. There is no strong motivation for modifying the nature of cold dark matter in order to explain any of the dwarf galaxy "problems".

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Joseph Silk. 2017-03-24. Feedback by Massive Black Holes in Dwarf Galaxies. https://doi.org/10.3847/2041-8213%2Faa67da

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