This review provides an overview of recent advances in multi-wavelength and multi-
messenger observations of blazars, the current status of theoretical models for blazar …

Relativistic jets of active galactic nuclei have been known to exist for 100 years. Blazars with
their jet pointing close to our line of sight are some of the most variable and extreme objects …

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) …

The lower-energy peak of the spectral energy distribution of blazars has commonly been
ascribed to synchrotron radiation from relativistic particles in the jets. Despite the consensus …

We present results from a parsec-scale jet kinematics study of 409 bright radio-loud active
galactic nuclei (AGNs) based on 15 GHz Very Long Baseline Array (VLBA) data obtained …

Context. Identifying the most likely sources for high-energy neutrino emission has been one
of the main topics in high-energy astrophysics ever since the first observation of high-energy …

We present multiepoch, parsec-scale core brightness temperature observations of 447
active galactic nucleus (AGN) jets from the MOJAVE and 2 cm Survey programs at 15 GHz …

NRAO 530 (1730− 130, J1733− 1304) is a flat-spectrum radio quasar (FSRQ) that belongs
to the class of bright γ-ray blazars and shows significant variability across the entire …

The origin of jets is one of the most important issues concerning active galactic nuclei, yet it
has remained obscure. In this work, we made use of information from emission lines …

In this work, we exploit the luminosity of the broad-line region (BLR) for 50 Fermi blazars
through matching the coordinates between the Sloan Digital Sky Survey catalog, Fermi …