Fate of an Accretion Disc around a Black Hole when both the Viscosity and Dark Energy is Effecting

Abstract

This paper deals with the viscous accretion flow of modified Chaplygin gas towards a black hole as the central gravitating object. Modified Chaplygin gas is a particular type of dark energy model which mimics of radiation era to phantom era depending on the different values of its parameters. We compare the drak energy accretion with the flow of adiabatic gas. An accretion disc flow around a black hole is an example of a transonic flow. To make the model, we consider three components of Navier Stokes' equation, the equation of continuity and the modified Chaplygin gas's equation of state. As a transonic flow passes through the sonic point, the velocity gradient being apparently singular there, gives rise to two flow branches : one infalling, the accretion and the other outgoing, the wind. We show that the wind curve is stronger and wind speed reaches to that of light at a finite distance from the black hole when dark energy is considered. Besides, if we increase the viscosity, accretion disc is being shortened. This two process acting together deviates much from adiabatic accretion case. It shows a weakening process for the accretion procedure by the works of viscous system influenced angular momentum transport and the repulsive force of the modified Chaplygin gas together.

arXiv comment12 pages, 18 figures

References in corpus (30)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• Phantom Energy and Cosmic Doomsday
• Generalized Chaplygin Gas, Accelerated Expansion and Dark Energy-Matter Unification
• Statefinder -- a new geometrical diagnostic of dark energy
• Observational and Theoretical Constraints on Singular Dark Matter Halos
• Role of Modified Chaplygin Gas in Accelerated Universe
• Dark energy cosmology with generalized linear equation of state
• Description of Pseudo-Newtonian Potential for the Relativistic Accretion Disk around Kerr Black Holes
• Does the mass of a black hole decrease due to the accretion of phantom energy
• The not-so-massive black hole in the microquasar GRS1915+105
• The Shakura-Sunyaev Viscosity Prescription with Variable alpha(r)
• Determination of mass of IGR J17091-3624 from "Spectro-Temporal" variations during onset-phase of the 2011 outburst
• The Atoms Of Space, Gravity and the Cosmological Constant
• Constraints on AGN accretion disc viscosity derived from continuum variability
• Combined constraints on modified Chaplygin gas model from cosmological observed data: Markov Chain Monte Carlo approach
• Constraints on an Annihilation Signal from a Core of Constant Dark Matter Density around the Milky Way Center with H.E.S.S
• Unique probe of dark matter in the core of M87 with the Event Horizon Telescope
• Phantom Energy Accretion onto Black Holes in Cyclic Universe
• Global solution of viscous accretion disk around rotating compact objects: a pseudo-general-relativistic study
• Dark Energy and Dark Matter unification via superfluid Chaplygin gas
• Dark Energy Accretion onto black holes in a cosmic scenario
• Dark Energy Accretion onto a Black Hole in an Expanding Universe
• Accretion of Chaplygin gas upon black holes: Formation of faster outflowing winds
• Long-term X-ray Variability of Ultraluminous X-ray Sources
• Period doubling and non-linear resonance in the black hole candidate IGR J17091-3624 ?
• Can the viscosity in astrophysical black hole accretion disks be close to its string theory bound?
• Generalized models of unification of dark matter and dark energy
• Hydromagnetics of advective accretion flows around black holes: Removal of angular momentum by large scale magnetic stresses
• Possible origin of viscosity in the Keplerian accretion disks due to secondary perturbation: Turbulent transport without magnetic field
• Accretion of a Phantom Scalar Field by a Black Hole: restrictions on the field distribution

Cited by in corpus (5)

• Search for Missing Links Between Two Extreme Wind Speed Profiles : Dark Energy Accretion and Adiabatic Fluid Accretion
• Threshold Drop in Accretion Density if Dark Energy is Accreting onto a Supermassive Black Hole
• Violation of Universal Lower Bound for the Shear Viscosity to Entropy Density Ratio in Dark Energy Dominated Accretion
• Dark Energy Accretion onto Van der Waal's Black Hole
• Viscous Dark Energy Accretion Activities : Sonic Speed, Angular Momentum and Mach Number Studies