Can the BZ mechanism power steady jets?
arXiv:2107.12384 · doi:10.3847/2041-8213/ac19a1
Abstract
We consider the Blandford-Znajek (BZ) mechanism for extracting black hole spin energy to drive astrophysical jets. Analyses of the BZ mechanism generally take no account of any electric charge on the black hole. But, as noted by Wald and others, if the medium surrounding the black hole is an ionized plasma with mobile charges, then a spinning hole quickly acquires an electric charge. The effect of this charge is to nullify the electric field structures which drive the BZ mechanism. Since jets are now observed in a wide variety of classes of accreting objects, most of which do not contain a central black hole, it seems likely that the jet driving mechanism in all astrophysical objects uses energy directly from the accretion disc, rather than black hole spin.
arXiv comment4 pages, accepted for publication in ApJL, proof version
References in corpus (14)
- The Co-Evolution of Galaxies and Supermassive Black Holes: Insights from Surveys of the Contemporary Universe
- Relativistic Jets in Active Galactic Nuclei
- Extracting energy from black holes: the relative importance of the Blandford-Znajek mechanism
- Electrodynamics of black hole magnetospheres
- First-Principles Plasma Simulations of Black-Hole Jet Launching
- On the charge of the Galactic centre black hole
- Magnetohydrodynamic Simulations of Active Galactic Nucleus Disks and Jets
- Black holes and gravitational waves in models of minicharged dark matter
- 3D Kinetic Pulsar Magnetosphere Models: Connecting to Gamma-Ray Observations
- Observational constraints on the powering mechanism of transient relativistic jets
- Jets from Young Stars
- Synthetic gamma-ray lightcurves of Kerr black-hole magnetospheric activity from particle-in-cell simulations
- A comparison of the acceleration mechanisms in YSO and AGN jets
- Two-dimensional Particle-in-Cell simulations of axisymmetric black hole magnetospheres
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- Spinning black holes magnetically connected to a Keplerian disk -- Magnetosphere, reconnection sheet, particle acceleration and coronal heating
- Implications from the velocity profile of the M87 jet: a possibility of a slowly rotating black hole magnetosphere
- Non-linear Electrodynamics in Blandford-Znajeck Energy Extraction
- Entropy of the Universe and Hierarchical Dark Matter
- Electromagnetic Accelerating Universe
- Electromagnetic field of a charge asymptotically approaching spherically symmetric black hole
- Neutral particle collisions near Gibbons-Maeda-Garfinkle-Horowitz-Strominger black holes after shadow observations
- Zooming in on the horizon when in its Meissner state
- The astrophysics of rotational energy extraction from a black hole
- On the origin of core radio emissions from black hole sources in the realm of relativistic shocked accretion flow
- Electrically-charged black holes and the Blandford-Znajek mechanism