Compact steep-spectrum (CSS) and peaked-spectrum (PS) radio sources are compact,
powerful radio sources. The multi-frequency observational properties and current theories …

Radio-loud compact radio sources (CRSs) are characterised by morphological compactness
of the jet structure centred on the active nucleus of the galaxy. Most of the local elliptical …

The LOFAR Two-metre Sky Survey (LoTSS) is a deep 120–168 MHz imaging survey that will
eventually cover the entire northern sky. Each of the 3170 pointings will be observed for 8 h …

Context. The changing-look phenomenon observed in a growing number of active galaxies
challenges our understanding of the accretion process close to a black hole. Aims. We …

The tidal disruption of a star by a massive black hole is expected to yield a luminous flare of
thermal emission. About two dozen of these stellar tidal disruption flares (TDFs) may have …

We have performed a search over 3440 deg 2 of Epoch 1 (2017–2019) of the Very Large
Array Sky Survey to identify unobscured quasars in the optical (0.2< z< 3.2) and obscured …

The evolution of symmetric extragalactic radio sources can be characterized by four distinct
growth stages of the radio luminosity versus size of the source. The interaction of the jet with …

We present the results of a pilot JVLA project aimed at studying the bulk of the radio-emitting
AGN population, that was unveiled by the NVSS/FIRST and SDSS surveys. The key …

We argue that the 'changing look'active galactic nucleus (AGN) recently reported by
LaMassa et al. could be a luminous flare produced by the tidal disruption of a supersolar …

We have commenced a multiyear program, the Caltech-NRAO Stripe 82 Survey (CNSS), to
search for radio transients with the Jansky VLA in the Sloan Digital Sky Survey Stripe 82 …