Work

Density Profiles and Survival of Primordial Black Hole Halos and Clusters

Year: 2026

Type: article

Abstract: If primordial black holes are born clustered, or cluster early, the objects that later observations meet are not isolated holes but groups: small clusters with their own internal dynamics, density profiles, and life expectancies. Whether such structures survive to the present day decides which version of the abundance bounds applies, the smooth version or the clustered version, and it decides the character of any direct encounter, from lensing signatures to merger environments. The headline computed values are: surviving configs = 0/9; core over ceiling = 4.99e-70. The study is a computation from stated assumptions, not a measurement, and the deposited script reproduces every number quoted.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.24147754

Author: Aldred, William Alexander

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7225829472

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