Accretion of Chaplygin gas upon black holes: Formation of faster outflowing winds

TL;DR

This paper investigates how modified Chaplygin gas accretes onto black holes and finds that it significantly enhances outflow winds, suggesting a link between dark energy models and black hole wind phenomena.

Contribution

It introduces a detailed analysis of accretion and wind solutions for modified Chaplygin gas around black holes, highlighting its impact on outflow speeds.

Findings

Modified Chaplygin gas produces faster outflow winds.

Accretion solutions remain largely unaffected by gas properties.

Dark energy characteristics influence wind dynamics near black holes.

Abstract

We study the accretion of modified Chaplygin gas upon different types of black hole. Modified Chaplygin gas is one of the best candidates for a combined model of dark matter and dark energy. In addition, from a field theoretical point of view the modified Chaplygin gas model is equivalent to that of a scalar field having a self-interacting potential. We formulate the equations related to both spherical accretion and disc accretion, and respective winds. The corresponding numerical solutions of the flow, particularly of velocity, are presented and are analyzed. We show that the accretion-wind system of modified Chaplygin gas dramatically alters the wind solutions, producing faster winds, upon changes in physical parameters, while accretion solutions qualitatively remain unaffected. This implies that modified Chaplygin gas is more prone to produce outflow which is the natural consequence of the dark energy into the system.