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No direct link between black holes and dark matter, scientists find

Massive black holes have been found at the centers of almost all galaxies, where the largest galaxies -- which are also the ones embedded in the largest halos of dark matter -- harbor the most massive black holes. This led to the speculation that there is a direct link between dark matter and black holes, i.e. that exotic physics controls the growth of a black hole. Scientists have now conducted an extensive study of galaxies to prove that black hole mass is not directly related to the mass of the dark matter halo but rather seems to be determined by the formation of the galaxy bulge.
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