The nuclei of most normal galaxies contain supermassive black holes, which can accrete
gas through a disk and become active. These active galactic nuclei (AGNs) can form jets that …

We review current understanding of the population of radio galaxies and radio-loud quasars
from an observational perspective, focusing on their large-scale structures and dynamics …

We analyze the parsec-scale jet kinematics from 2007 June to 2018 December of a sample
of γ-ray bright blazars monitored roughly monthly with the Very Long Baseline Array (VLBA) …

We present a description of the adaptive mesh refinement (AMR) implementation of the
PLUTO code for solving the equations of classical and special relativistic …

Relativistic jets are associated with extreme astrophysical phenomena, like the core
collapse of massive stars in gamma-ray bursts (GRBs) and the accretion on to supermassive …

Relativistic hydro and magnetohydrodynamics provide continuum fluid descriptions for gas
and plasma dynamics throughout the visible universe. We present an overview of state-of …

We present results of new three-dimensional (3D) general-relativistic magnetohydrodynamic
simulations of rapidly rotating strongly magnetized core collapse. These simulations are the …

Energy deposition by active galactic nuclei jets into the ambient medium can affect galaxy
formation and evolution, the cooling of gas flows at the centres of galaxy clusters, and the …

In this chapter, we review some features of particle acceleration in astrophysical jets. We
begin by describing four observational results relating to the topic, with particular emphasis …

Prompt gamma-ray burst (GRB) emission requires some mechanism to dissipate an
ultrarelativistic jet. Internal shocks or some form of electromagnetic dissipation are candidate …