Stationary accretion disks launching super fast-magnetosonic MHD jets

Abstract

We present self-similar models of resistive viscous Keplerian disks driving non-relativistic magnetohydrodynamics (MHD) jets becoming super fast-magnetosonic. We show that in order to obtain such solutions, the thermal pressure must be a sizeable fraction of the poloidal magnetic pressure at the Alfven surface. These steady solutions which undergo a recollimation shock causally disconnected from the driving engine, account for structures with a high temperature plasma in the sub-Alfvenic region. We suggest that only unsteady outflows with typical time-scales of several disk dynamical time-scales can be produced if the suitable pressure conditions are not fulfilled.

arXiv commentAccepted in ApJ Letters

References in corpus (11)

• A universal radio/X-ray correlation in low/hard state black hole binaries
• The Formation and Structure of a Strongly Magnetized Corona above Weakly Magnetized Accretion Disks
• HST/STIS Spectroscopy of the Optical Outflow from DG Tau: Indications for Rotation in the Initial Jet Channel
• MHD Simulations of Disk-Magnetized Star Interactions in Quiescent Regime: Funnel Flows and Angular Momentum Transport
• Magneto-Centrifugal Launching of Jets from Accretion Disks. I: Cold Axisymmetric Flows
• Magneto-centrifugally driven winds: comparison of MHD simulations with theory
• A disk-wind model with correct crossing of all MHD critical surfaces
• Radiatively inefficient MHD accretion-ejection structures
• Simulation-Based Investigation of a Model for the Interaction Between Stellar Magnetospheres and Circumstellar Accretion Disks
• HeI 1.083 micron emission and absorption in DG Tau: line excitation in jet, hot wind, and accretion flow
• The terminal bulk Lorentz factor of relativistic electron-positron jets

Cited by in corpus (41)

• Which jet launching mechanism(s) in TTauri stars?
• A unified accretion-ejection paradigm for Black Hole X-ray Binaries
• Magnetic Fields in Astrophysical Jets: From Launch to Termination
• Radiation spectra of warm and optically thick coronae in AGN
• Stratified Magnetically-Driven Accretion-Disk Winds and Their Relations to Jets
• The radial structure of protostellar accretion disks: influence of jets
• The Structure of Magnetocentrifugal Winds I. Steady Mass Loading
• HST/STIS observations of the RW Aurigae bipolar jet: mapping the physical parameters close to the source
• Absorption lines from magnetically-driven winds in X-ray binaries
• Magnetically-driven jets and winds from weakly magnetized accretion disks
• Two-component jet simulations: I. Topological stability of analytical MHD outflow solutions
• Binary interactions with high accretion rates onto main sequence stars
• Ringed accretion disks: instabilities
• Interaction of young stellar object jets with their accretion disk
• Ringed accretion disks: evolution of double toroidal configurations
• Multi-epoch Sub-arcsecond [Fe II] Spectroimaging of the DG Tau Outflows with NIFS. I. First data epoch
• Nonradial and nonpolytropic astrophysical outflows VI. Overpressured winds and jets
• The pertinence of Jet Emitting Discs physics to Microquasars: Application to Cygnus X-1
• The absence of jets in cataclysmic variable stars
• Launching jets from accretion belts
• The bipolar jet of the symbiotic star R Aquarii: A study of its morphology using the high-resolution HST WFC3/UVIS camera
• Wind-driving protostellar accretion discs. II. Numerical method and illustrative solutions
• Are Low-Frequency Quasi-Periodic Oscillations seen in accretion flows the disk response to a jet instability?
• Are Magnetic Wind-Driving Disks Inherently Unstable?
• Absorption lines from magnetically driven winds in X-ray binaries II: high resolution observational signatures expected from future X-ray observatories
• Numerical simulations of MHD jets from Keplerian accretion disks I-Recollimation shocks
• Resistive jet simulations extending radially self-similar magnetohydrodynamic models
• Velocity asymmetries in YSO jets: Intrinsic and extrinsic mechanisms
• Impact of the disk magnetization on MHD disk wind signature
• Magnetorotationally driven wind cycles in local disc models
• Dead zones in protostellar discs: the case of Jet Emitting Discs
• Global Self-Similar Protostellar Disk/Wind Models
• Magneto centrifugal winds from accretion discs around black hole binaries
• Study of the bipolar jet of the YSO Th 28 with VLT/SINFONI: Jet morphology and H${}_2$ emission
• Influence of the turbulent magnetic pressure on isothermal jet emitting disks
• MHD disc winds
• Dust-driven Dynamos in Accretion Disks
• Are jets in symbiotic stars driven by magnetic fields?
• Jet launching and field advection in quasi-Keplerian discs
• The role of thermal pressure in jet launching
• Effects of a solid surface on jet formation around neutron stars