Black hole (BH) accretion flows and jets are qualitatively affected by the presence of ordered
magnetic fields. We study fully 3D global general relativistic magnetohydrodynamic (MHD) …

Radio loud active galactic nuclei (AGNs) are on average 1000 times brighter in the radio
band compared to radio quiet AGNs. We investigate whether this radio loud/quiet dichotomy …

We present an extended scheme for the calculation of the profiles of emission lines from
accretion discs around rotating black holes. The scheme includes discs with angular …

We implement a black hole spin evolution and jet feedback model into SWIFT, a smoothed
particle hydrodynamics code. The jet power is determined self-consistently assuming that …

The outflow efficiency (η) from black hole (BH) accretion disc systems is known to depend
upon both the BH spin (a) and the amount of large-scale magnetic flux threading the BH and …

Recent work on the engines of active galactic nuclei jets suggests that their power depends
strongly and perhaps counter-intuitively on black hole spin. We explore the consequences of …

We argue that the magnetic flux threading the black hole (BH), rather than BH spin or
Eddington ratio, is the dominant factor in launching powerful jets and thus determining the …

We report on a global, three-dimensional GRMHD simulation of an accretion torus
embedded in a large-scale vertical magnetic field orbiting a Schwarzschild black hole. This …

We compare accretion and black hole spin as potential energy sources for outbursts from
active galactic nuclei (AGNs) in brightest cluster galaxies (BCGs). Based on our adopted …

Off-equatorial circular orbits with constant latitudes (halo orbits) of electrically charged
particles exist near compact objects. In the previous paper, we discussed this kind of motion …