▪ Abstract A large collective effort to study the variability of active galactic nuclei (AGN) over
the past decade has led to a number of fundamental results on radio-quiet AGN and blazars …

Collimated outflows (jets) appear to be a ubiquitous phenomenon associated with the
accretion of material onto a compact object. Despite this ubiquity, many fundamental physics …

We collect data at well-sampled frequencies from the radio to the γ-ray range for the
following three complete samples of blazars: the Slew survey, the 1-Jy samples of BL Lacs …

Gas accretion onto some massive black holes (MBHs) at the centers of galaxies actively
powers luminous emission, but most MBHs are considered dormant. Occasionally, a star …

The phenomenology of γ‐ray bright blazars can be accounted for by a sequence in the
source power and intensity of the diffuse radiation field surrounding the relativistic jet …

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

The jets of powerful blazars propagate within relatively dense regions of radiation produced
externally to the jet. This radiation is a key ingredient to understand the origin of the high …

The blazar PKS 0735+ 178 is possibly associated with multiple neutrino events observed by
the IceCube, Baikal, Baksan, and KM3NeT neutrino telescopes while it was flaring in the γ …

The blazar Mrk 501 was observed at energies above 0.10 TeV with the MAGIC Telescope
from 2005 May through July. The high sensitivity of the instrument enabled the determination …

Theoretical models for the production of relativistic jets from active galactic nuclei predict that
jet power arises from the spin and mass of the central supermassive black hole, as well as …