Black hole models and astronomical observations

TL;DR

This paper compares various black hole models, introduces a new modeling method, and discusses gravitational repulsion near black hole horizons, enhancing understanding of their observational relevance.

Contribution

It presents a simple method for constructing new static non-rotating black hole models and analyzes gravitational repulsion phenomena.

Findings

Differences in model adequacy for astronomical observations

Existence of gravitational repulsion near Bardeen-Kiselev black hole horizons

Introduction of a new modeling approach

Abstract

Some well-known metrics used as models of static non-rotating black holes are considered. These are the Reissner-Nordstrom-de Sitter, Bardeen-Kiselev and McVittie models. A significant difference between them in how adequately they can describe or be the basis for describing observed astronomical objects is demonstrated. A simple method for constructing new models of static non-rotating black holes is presented. It has been shown that a region of gravitational repulsion may exist around the horizon of a Bardeen-Kiselev black hole.