The production and acceleration mechanisms of ultrahigh-energy cosmic rays (UHECRs) of
energy> 10 20 eV, clearly beyond the GZK cutoff limit, remain unclear, which points to the …

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 revisit the motion of massless particles with anyonic spin in the horizon of Kerr-Newman
geometry. As recently shown, such particles can move within the horizon of the black hole …

Abstract In 1977, Blandford and Znajek showed that the electromagnetic field surrounding a
rotating black hole can harvest its spin energy and use it to power a collimated astrophysical …

We present fully general relativistic simulations of the quasicircular inspiral and merger of
charged, nonspinning, binary black holes with charge-to-mass ratio λ≤ 0.3. We discuss the …

We study dynamics of relativistic coronal mass ejections (CMEs), from launching by
shearing of foot-points (either slowly–the 'Solar flare'paradigm, or suddenly–the 'star …

In anticipation of a LIGO detection of a black hole/neutron star merger, we expand on the
intriguing possibility of an electromagnetic counterpart. Black hole/Neutron star mergers …

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 …

We extend the (gauged) Skyrme model to the case in which the global isospin group (which
usually is taken to be SU (N)) is a generic compact connected Lie group G. We analyze the …

We exploit the near-horizon conformal symmetry of rapidly spinning black holes to
determine universal properties of their magnetospheres. Analytic expressions are derived …