Clustering of primordial black holes: Basic results

Details Clustering of primordial black holes: Basic results Clustering of primordial black holes: Basic results

2005-09-06

arxiv.org/abs/astro-ph/0509141v2

Phys.Rev.D73:083504,2006

Astronomy and Astrophysics

Astrophysics

33 pages, 8 figures; replaced with version published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.73.083504

We investigate the spatial clustering properties of primordial black holes (PBHs). With minimal assumptions, we show that PBHs created in the radiation era are highly clustered. Using the peaks theory model of bias, we compute the PBH two-point correlation function and power spectrum. For creation from an initially adiabatic power spectrum of perturbations, the PBH power spectrum contains both isocurvature and adiabatic components. The absence of observed isocurvature fluctuations today constrains the mass range in which PBHs may serve as dark matter. We briefly discuss other consequences of PBH clustering.

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