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Abstract: Massive black holes are nowadays believed to reside in most local galaxies.Studies have also established a number of relations between the MBH mass andproperties of the host galaxy such as bulge mass and velocity dispersion. Theseresults suggest that central MBHs, while much less massive than the host~0.1%, are linked to the evolution of galactic structure. When did it allstart? In hierarchical cosmologies, a single big galaxy today can be tracedback to the stage when it was split up in hundreds of smaller components. DidMBH seeds form with the same efficiency in small proto-galaxies, or did theirformation had to await the buildup of substantial galaxies with deeperpotential wells? I briefly review here some of the physical processes that areconducive to the evolution of the massive black hole population. I will discussblack hole formation processes for `seed- black holes that are likely to placeat early cosmic epochs, and possible observational tests of these scenarios.



Author: Marta Volonteri

Source: https://arxiv.org/



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