Context. Broad emission lines in the UV/optical spectra of changing-look active galactic
nuclei (CLAGNs) appear and disappear on timescales of months to decades. Aims. We …

Context. It is not yet well known whether narrow line Seyfert 1 (NLS1) galaxies follow the M
BH− σ⋆ relation found for normal galaxies. Emission lines, such as [SII] or [OIII] λ5007, have …

ABSTRACT The Pierre Auger Observatory reported that 20 of the 27 highest energy cosmic
rays have arrival directions within 3 fdg 2 of a nearby galaxy in the Veron-Cetty and Veron …

We report the complex radio properties of the radio galaxy NGC 2329 that resides in the
centre of the galaxy cluster Abell 569. For this study, we have used archival data from the …

A key challenge in understanding the feedback mechanism of active galactic nucleus (AGN)
in Brightest Cluster Galaxies (BCGs) is the inherent rarity of catching an AGN during its …

We present the results of a search for high-energy γ-ray emission from a large sample of
galaxy clusters sharing the properties of three existing Fermi Large Area Telescope …

We present the second catalog and data release of optical spectral line measurements and
active galactic nucleus (AGN) demographics of the BAT AGN Spectroscopic Survey, which …

We report on Chandra X-ray observations of possible active galactic nuclei (AGNs) which
have been correlated with ultrahigh energy cosmic rays (UHECRs) observed by the Pierre …

As the third paper of our series of studies that aim at examining the AGN–host co-evolution
by using partially obscured active galactic nuclei (AGNs), we extend the broad-line …

Context. Galaxy merging is widely accepted to be a driving factor in galaxy formation and
evolution, while the feedback from actively accreting nuclei is thought to regulate the black …