This review discusses the physics of magnetic reconnection—a process in which the
magnetic field topology changes and magnetic energy is converted to kinetic energy—in …

This article reviews the recent observational results regarding γ-ray emission from active
galaxies. The most numerous discrete extragalactic γ-ray sources are AGNs dominated by …

In magnetized astrophysical outflows, the dissipation of field energy into particle energy via
magnetic reconnection is often invoked to explain the observed non-thermal signatures. By …

Observations of gamma-ray-bursts and jets from active galactic nuclei reveal that the jet flow
is characterized by a high radiative efficiency and that the dissipative mechanism must be a …

Magnetic reconnection in relativistic collisionless plasmas can accelerate particles and
power high-energy emission in various astrophysical systems. Whereas most previous …

It is generally accepted that astrophysical sources cannot emit synchrotron radiation above
160 MeV in their rest frame. This limit is given by the balance between the accelerating …

TeV flares of a duration of∼ 10 min have been observed in several blazars. The fast flaring
requires compact regions in the jet that boost their emission towards the observer at an …

Using two-dimensional particle-in-cell simulations, we characterize the energy spectra of
particles accelerated by relativistic magnetic reconnection (without guide field) in …

Markarian 421 (Mrk 421 hereafter) is a nearby active galaxy with a featureless optical
spectrum devoid of prominent emission or absorption lines, strongly polarized variable …

The flat-spectrum radio quasar PKS 1222+ 216 (4C+ 21.35, z= 0.432) was detected in the
very high energy γ-ray band by MAGIC during a highly active γ-ray phase following an alert …