Jet production in black-hole X-ray binaries and active galactic nuclei: mass feeding and advection of magnetic fields

Abstract

Relativistic jets are observed only in the low/hard and intermediate states of X-ray binaries (XRBs), and are switched off in the thermal state, but they appear to be present in both low-luminosity and luminous active galactic nuclei (AGNs). It is widely believed that strong large-scale magnetic fields is a crucial ingredient in jet production; such fields can be attained only through efficient advection from the outer disc. We suggest that geometrically thin accretion discs with magnetic outflows are present in luminous radio-loud AGNs; this is likely because the interstellar medium provides both mass and sufficient magnetic flux to the outer disc. Most angular momentum of such disc is removed by the outflows, and the radial velocity of the disc is significantly increased compared to viscous drift velocity. This facilitates efficient magnetic field advection through the disc to produce a strong field near the black hole in luminous AGNs, which helps launch relativistic jets. In XRBs, the magnetic fields of the gas from companion stars are too weak to drive outflows from outer discs. Jets are therefore switched off in the thermal state due to inefficient magnetic field advection in the disc.

8 pages, accepted by MNRAS

References in corpus (12)

• Radio-Loudness of Active Galactic Nuclei: Observational Facts and Theoretical Implications
• A Population of Radio-loud Narrow Line Seyfert 1 Galaxies with Blazar-like Properties?
• Unifying the micro and macro properties of AGN feeding and feedback
• The hard X-ray spectral evolution in X-ray binaries and its application to constrain the black hole mass of ultraluminous X-ray sources
• A Magnetohydrodynamic Model for the Formation of Episodic Jets
• An accretion disc-corona model for X-ray spectra of active galactic nuclei
• Advection/Diffusion of Large-Scale B-Field in Accretion Disks
• Oscillating shocks in the low angular momentum flows as a source of variability of accreting black holes
• Correlations between radio and bolometric fluxes in GX 339-4 and H1743-322
• On the radio dichotomy of active galactic nuclei
• Does the circularization radius exist or not for low angular momentum accretion?
• Magnetic Field Measurement in Black Hole X-Ray Binary Cygnus X-1

Cited by in corpus (9)

• Observations of a black hole X-ray binary indicate formation of a magnetically arrested disk
• On the diversity of the jet production efficiency in Swift/BAT AGNs
• Jets in the soft state in Cyg X-3 caused by advection of the donor magnetic field and unification with low-mass X-ray binaries
• The persistent radio jet coupled to hard X-rays in the soft state of Cyg X-1
• Neutrinos and gravitational waves from magnetized neutrino-dominated accretion discs with magnetic coupling
• The dynamical structure of the outflows driven by a large-scale magnetic field
• Resistive Hot Accretion Flows with Anisotropic Pressure
• Evolution of accretion disc-corona in the TDE Candidate AT 2019avd
• The dependence of the fraction of radio luminous quasars on redshift and its theoretical implications