Screened Simpson-Visser Black Holes with Asymptotically de-Sitter Core

TL;DR

This paper introduces a new regular black hole solution with an asymptotically de-Sitter core, analyzing its thermodynamics, geodesic structure, observational signatures, and topological properties to understand its physical behavior and potential observational effects.

Contribution

It presents a novel screened Simpson-Visser black hole model with detailed thermodynamic, geodesic, and topological analysis, expanding understanding of regular black holes with de-Sitter cores.

Findings

Stable thermodynamic phases identified.

Photon sphere and shadow characteristics analyzed.

Energy emission rates affected by modified geometry.

Abstract

In this work, we introduce a screened Simpson-Visser regular solution and perform a comprehensive study of its physical and observational properties. We begin by analyzing the thermodynamic behavior of the black hole, including detailed investigations of the Hawking temperature, Gibbs free energy, and specific heat, which provide insights into its stability and phase structure. Next, we examine the geodesic structure of the spacetime, considering both massless (photon) and massive (timelike) particles. In particular, we study the photon sphere, the corresponding black hole shadow, and the innermost stable circular orbits (ISCO), which are crucial for understanding the motion of matter and light around the black hole. Furthermore, we explore the black hole's energy-emission rate radiation, highlighting the effects of the modified geometry on observational signatures. Finally, we investigate the topological aspects of the black hole, analyzing both the thermodynamic topology and the photon sphere's topological properties. Our analysis demonstrates the intricate interplay between the spacetime geometry, geodesic motion, and black hole thermodynamics, offering a deeper understanding of this class of regular black holes and their potential observational consequences.