Spherical accretion by normal and phantom Einstein--Maxwell--dilaton black holes

TL;DR

This paper studies how different types of fluids accrete onto Einstein-Maxwell-dilaton black holes, analyzing the effects of fluid properties and backreaction, to understand the accretion process in these complex spacetime geometries.

Contribution

It provides a detailed analysis of spherical accretion onto both normal and phantom Einstein-Maxwell-dilaton black holes, including backreaction effects, which is a novel extension of previous models.

Findings

Accretion behavior varies between normal and phantom fluids.

Backreaction effects influence the accretion rate and flow structure.

The study offers insights into fluid dynamics around exotic black holes.

Abstract

We investigate the spherical accretion process for general static spherically symmetric fluids. We analyze this process by using the general metric ansatz for spherically symmetric black holes. We specialize to the case of normal and phantom isothermal fluids and investigate their accretion process onto normal and phantom Einstein-Maxwell-dilaton black holes. Backreaction effects are discussed.