Hot accretion with outflow and thermal conduction

Abstract

We present self-similar solutions for advection -dominated accretion flows with thermal conduction in the presence of outflows. Possible effects of outflows on the accretion flow are parametrized and a saturated form of thermal conduction, as is appropriate for the weakly-collisional regime of interest, is included in our model. While the cooling effect of outflows is noticeable, thermal conduction provides an extra heating source. In comparison to accretion flows without winds, we show that the disc rotates faster and becomes cooler because of the angular momentum and energy flux which are taking away by the winds. But thermal conduction opposes the effects of winds and not only decreases the rotational velocity, but increases the temperature. However, reduction of the surface density and the enhanced accretion velocity are amplified by both of the winds and the thermal conduction. We find that for stronger outflows, a higher level of saturated thermal conduction is needed to significantly modify the physical profiles of the accretion flow.

Accepted for publication in Astrophysics & Space Science

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• The self-similar structure of advection-dominated discs with outflow and radial viscosity
• Role of thermal conduction in an advective accretion with bipolar outflows
• Self-similar structure of a hot magnetized flow with thermal conduction
• Viscous and resistive accretion flows with radially self-similar and outflows
• Radiation Spectrum of a Magnetized Supercritical Accretion Disc with Thermal Conduction
• Structure of ADAFs in a general large-Scale B-field: The role of wind and thermal conduction
• Self-similar solutions of viscous and resistive ADAFs with thermal conduction
• Hydrodynamical wind on magnetized Accretion Flows with Convection
• Self-similar structure of resistive ADAFs with outflow and large-scale magnetic field
• Thermal Conduction in Clumpy Disks and BLR clouds