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arxiv: 1704.01668 · v2 · pith:CIGD7PVGnew · submitted 2017-04-05 · 🌌 astro-ph.GA · astro-ph.CO· gr-qc

Dynamics of dwarf galaxies disfavor stellar-mass black hole dark matter

Savvas M. Koushiappas , Abraham Loeb This is my paper
classification 🌌 astro-ph.GA astro-ph.COgr-qc
keywords blackdarkdwarfgalaxiesmatterdensityholemass
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We study the effects of black hole dark matter on the dynamical evolution of stars in dwarf galaxies. We find that mass segregation leads to a depletion of stars in the center of dwarf galaxies and the appearance of a ring in the projected stellar surface density profile. Using Segue 1 as an example we show that current observations of the projected surface stellar density rule out at the 99.9% confidence level the possibility that more than 6% of the dark matter is composed of black holes with a mass of few tens of solar masses.

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