Primordial Structure of Massive Black Hole Clusters

Details Primordial Structure of Massive Black Hole Clusters Primordial Structure of Massive Black Hole Clusters

2004-01-26

arxiv.org/abs/astro-ph/0401532v2

Astronomy and Astrophysics

Astrophysics

19 pages; 3 figures; The final version accepted for publication in Astroparticle Physics

Scientific paper

10.1016/j.astropartphys.2004.12.

We describe a mechanism of the primordial black holes formation that can explain the existence of a population of supermassive black holes in galactic bulges. The mechanism is based on the formation of black holes from closed domain walls. The origin of such domain walls could be a result of the evolution of an effectively massless scalar field during inflation. The initial non-equilibrium distribution of the scalar field imposed by background de-Sitter fluctuations gives rise to the spectrum of black holes, which covers a wide range of masses -- from superheavy ones down to deeply subsolar. The primordial black holes of smaller masses are concentrated around the most massive ones within a fractal-like cluster.

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