Cosmological Black Holes

TL;DR

This paper introduces a model where cosmological voids form from the collapse of large-scale perturbations into black holes, influencing universe evolution and potentially detectable via lensing and background radiation effects.

Contribution

It proposes a novel formation mechanism for cosmological voids involving black holes resulting from large-scale perturbations, aligning with Einstein-Straus cosmology.

Findings

Void formation from large wavelength perturbations collapsing into black holes.

Void expansion driven by surrounding matter's comoving expansion.

Potential detection methods include lensing effects and impact on cosmic background radiation.

Abstract

In this paper we propose a model for the formation of the cosmological voids. We show that cosmological voids can form directly after the collapse of extremely large wavelength perturbations into low-density black holes or cosmological black holes (CBH). Consequently the voids are formed by the comoving expansion of the matter that surrounds the collapsed perturbation. It follows that the universe evolves, in first approximation, according to the Einstein-Straus cosmological model. We discuss finally the possibility to detect the presence of these black holes through their weak and strong lensing effects and their influence on the cosmic background radiation.