QPO frequencies and mass-outflow rates in black hole powered galactic microquasars

Abstract

For all available pseudo-Schwarzschild potentials, we provide a non-self-similar model of coupled accretion-outflow system in connection to the Quasi Periodic Oscillation (QPO) of the black hole powered galactic microquasars and the emergence of barionic jets out of these objects. We use the vertically integrated 1.5 dimensional model to describe the disc structure where the equations of motion are written on the equatorial plane of the central accretor, assuming the flow to be in hydrostatic equilibrium in the transverse direction. First we formulate and solve the equations governing axisymmetrically rotating, advective, multi-transonic black hole accretion which may contain the Rankine Hugoniot Shock Waves (RHSW), and then we calculate the associated QPO frequencies ${\nu }_{QPO}$ in terms of relevant accretion parameters. We then argue that the post-shock region for such flows may serve as an efficient source of outflow generation; and we calculate, for {\it same} set of accretion parameters used to calculate the ${\nu }_{QPO}$s, what fraction of the accreting material, denoted by $R_{\dot{m}}$, is being blown as shock generated outflow. In this way we theoretically study the relation between ${\nu }_{QPO}$s and $R_{\dot{m}}$s for galactic microquasars and compare our theoretically obtained result with observational data.

arXiv commentAccepted for publication in MNRAS. Slight changes in concluding remarks part. Typos corrected. 15 pages with 4 black and white post-script figures embedded. mn.sty used

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• Oscillating shocks in the low angular momentum flows as a source of variability of accreting black holes
• Dependence of General Relativistic Accretion on Black Hole Spin
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• Shock oscillation model for QPOs in stellar-mass and supermassive black holes
• The Standing Accretion Shock Instability in the Disk around the Kerr Black Hole
• The model constraints from the observed trends for the quasi-periodic oscillation in RE J1034+396
• Radiative Shocks in Rotating Accretion Flows around Black Holes
• Behaviour of matter close to the event horizon
• Modeling the time-resolved quasi-periodic oscillations in AGNs
• Black Hole spin dependence of general relativistic multi-transonic accretion close to the horizon
• Direct time radio variability induced by non-axisymmetric standing accretion shock instability: implications for M87