Black holes are known to launch powerful relativistic jets and emit highly variable gamma
radiation. How these jets are loaded with plasma remains poorly understood. Spark gaps …

Force-free electrodynamics (FFE) describes magnetically dominated relativistic plasma via
non-linear equations for the electromagnetic field alone. Such plasma is thought to play a …

We investigate the dynamics and emission of a starved magnetospheric region (gap) formed
in the vicinity of a Kerr black hole horizon, using a new, fully general relativistic particle-in …

Recently, it was claimed by King & Pringle that accretion of electric charge by a black hole
(BH) rotating in an aligned external magnetic field results in a 'dead'vacuum …

By performing general-relativistic radiative transfer calculations, we show the radio images
of relativistic jets including highly magnetized regions inside jet funnels, based on steady …

Context. Accreting black holes (BHs) may be surrounded by a highly magnetized plasma
threaded by an organized poloidal magnetic field. Nonthermal flares and power-law spectral …

ABSTRACT Event Horizon Telescope (EHT) observations of the core of the galaxy M87
suggest an observational appearance dominated by a ring of approximately 40 as in …

Abstract The Blandford and Znajek (BZ) split-monopole serves as an important theoretical
example of the mechanism that can drive the electromagnetic extraction of energy from Kerr …

Supermassive black holes in active galactic nuclei launch relativistic jets, as indicated by
observed superluminal radio blobs. The energy source of these jets is widely discussed in …

Black hole–accretion disc systems are the central engines of relativistic jets from stellar to
galactic scales. We numerically quantify the unsteady outgoing Poynting flux through the …