Effects of Magnetic Field Loops on the Dynamics of Advective Accretion Flows and Jets around a Schwarzschild Blackhole
arXiv:1911.12792 · doi:10.3847/1538-4357/ab5d3c
Abstract
Magnetic fields advected along with low angular momentum accretion flows predominantly become toroidal due to the strong azimuthal velocity close to a black hole. We study self-consistently the movements of these flux tubes inside an advective disc and how they dynamically influence the flow. We find that the centrifugal barrier slows down the radial motion of the flux tubes. In this case, the large magnetic flux tubes with a significant drag force escape along the vertical axis due to buoyancy. Magnetic pressure rises close to the black hole and together with the centrifugal force, it combats gravity. The tug-of-war among these forces causes the centrifugal pressure supported shock to oscillate radially. We study the effects of successive injection of flux tubes and find how the flux tube could be trapped inside the disc in regions of highest entropy. Most interestingly, the shock wave remains at its average location and is not destroyed. We show that the toroidal field loops contribute significantly to collimate and accelerate the outflows from the centrifugal barrier and suggest this mechanism to be a way to collimate and accelerate jets.
arXiv comment16 pages, 16 figures, accepted in ApJ
References in corpus (26)
- Efficient Generation of Jets from Magnetically Arrested Accretion on a Rapidly Spinning Black Hole
- General Relativistic Magnetohydrodynamic Simulations of Jet Formation and Large-Scale Propagation from Black Hole Accretion Systems
- Global Magnetohydrodynamical Simulations of Accretion Tori
- Second Order Accurate Schemes for Magnetohydrodynamics With Divergence-Free Reconstruction
- Efficient, High Accuracy ADER-WENO Schemes for Hydrodynamics and Divergence-Free Magnetohydrodynamics
- Resonance Oscillation Of Radiative Shock Waves In Accretion Disks Around Compact Objects
- Global MHD Simulation of the Inner Accretion Disk in a Pseudo-Newtonian Potential
- Three-Dimensional Simulations of Magnetized Thin Accretion Disks around Black Holes: Stress in the Plunging Region
- Divergence-Free Reconstruction of Magnetic Fields and WENO Schemes for Magnetohydrodynamics
- Zero Energy Rotating Accretion Flows near a Black Hole
- Simulation of Thick Accretion Disks with Standing Shocks by Smoothed Particle Hydrodynamics
- Numerical Simulations of Standing Shocks in Accretion Flows around Black Holes: A Comparative Study
- Spectral Properties of Accretion Disks Around Black Holes II -- Sub-Keplerian Flows With and Without Shocks
- The effect of cooling on time dependent behaviour of accretion flows around black holes
- Hydrodynamic Simulation of Two Component Advective Flows around Black Holes
- A General Relativistic Magnetohydrodynamics Simulation of Jet Formation
- Stable and Unstable Accretion Flows with Angular Momentum near a Point Mass
- Quasi Periodic Oscillations in a Radiative Transonic Flow: Results of a Coupled Monte Carlo-TVD Simulation
- Simulations of Viscous Accretion Flow around Black Holes in Two-Dimensional Cylindrical Geometry
- Effects of Compton Cooling on Outflow in a Two Component Accretion Flow around a Black Hole: Results of a Coupled Monte Carlo-TVD Simulation
- Hydrodynamic Simulations of Oscillating Shock Waves in a Sub-Keplerian Accretion Flow Around Black Holes
- Magnetic Activity in Thick Accretion Disks and Associated Observable Phenomena I. Flux Expulsion
- Magnetic Activity in Thick Accretion Disks and Associated Observable Phenomena: II. Flux Storage
- Monte-Carlo Simulations of Thermal Comptonization Process in a Two Component Accretion Flow Around a Black Hole
- Monte-Carlo Simulations of Thermal Comptonization Process in a Two Component Accretion Flow Around a Black Hole in presence of an Outflow
- Dynamics of Magnetic Flux Tubes in an Advective Flow around a Black Hole
Cited by in corpus (5)
- GRMHD Simulations and Modeling for Jet Formation and Acceleration Region in AGNs
- Three Dimensional Simulations of Advective, Sub-Keplerian Accretion Flow onto Non-rotating Black Holes
- Review the possible advective disk structures around a black hole with two-type gas inflows
- Binary black holes in magnetized AGN disks
- Spectral signature of mass outflow in Two Component Advective Flow Paradigm