On the possibilities of mass loss from an advective accretion disc around stationary black holes

TL;DR

This paper investigates how advective accretion discs around stationary black holes can produce outflows or jets, analyzing the effects of viscosity and cooling on mass loss and identifying the parameter space conducive to outflow formation.

Contribution

It provides a detailed analysis of the conditions under which advective accretion discs can eject outflows, highlighting the influence of viscosity and cooling processes.

Findings

Outflows are possible over a wide range of viscosity parameters.

Active cooling reduces the likelihood of outflow ejection.

The parameter space for outflows depends on angular momentum and viscosity.

Abstract

We study the coupled disc-jet system around the black hole where the outflow solutions are obtained in terms of the inflow parameters. We observe that an advective accretion disc can eject outflows/jets for wide range of viscosity parameter. However, such possibility is reduced if the cooling is active as the energy dissipative process inside the disc. For mass outflow, we obtain the parameter space spanned by the inflow angular momentum and the viscosity in terms of cooling and quantify the limits of viscosity parameter.