Estimation of the mass outflow rates from viscous accretion discs
Dec, 201216 pages
Published in:
- Mon.Not.Roy.Astron.Soc. 430 (2013) 386
e-Print:
- 1212.4231 [astro-ph.HE]
DOI:
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Abstract: (arXiv)
We study viscous accretion disc around black holes, and all possible accretion solutions, including shocked as well as shock free accretion branches. Shock driven bipolar outflows from a viscous accretion disc around a black hole has been investigated. One can identify two critical viscosity parameters and , within which the stationary shocks may occur, for each set of boundary conditions. Adiabatic shock has been found for upto viscosity parameter , while in presence of dissipation and massloss we have found stationary shock upto . The mass outflow rate may increase or decrease with the change in disc parameters, and is usually around few to 10% of the mass inflow rate. We show that for the same outer boundary condition, the shock front decreases to a smaller distance with the increase of . We also show that the increase in dissipation reduces the thermal driving in the post-shock disc, and hence the mass outflow rate decreases upto a few %.Note:
- 16 pages, 13 figures, Accepted for publication in MNRAS
References(94)
Figures(13)