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LoTSS DR2 restarted radio galaxies in HETDEX field
Recurrent phases of dormancy and activity occur in the supermassive black holes in active galactic nuclei. Characterizing the duty cycles of this process is crucial in... -
Multiwavelength properties of unobscured AGN
We present one of the largest multiwavelength studies of simultaneous optical-to-X-ray spectral energy distributions (SEDs) of unobscured (N_H<10^22cm^-2) active galactic... -
Ccold molecular gas depletion in AGN hosts
The energy released by active galactic nuclei (AGN) has the potential to heat or remove the gas of the ISM, thus likely impacting the cold molecular gas reservoir of host... -
Archive of AGN spectral observations
The archive of AGN spectral observations is obtained on AZT-8 telescope at the Fesenkov Astrophysical Institute (FAI), Almaty, Kazakhstan. It represents the result of... -
High-redshift Ultraluminous QSOs with SMSS DR3
We search for ultraluminous Quasi-Stellar Objects (QSOs) at high redshift using photometry from the SkyMapper Southern Survey Data Release 3 (DR3), in combination with 2MASS,... -
Study of CSS/GPS/MPS radio sources
In this work, we study the optical properties of compact radio sources selected from the literature in order to determine the impact of the radio-jet in their circumnuclear... -
HETDEX Public Source Catalog (Version 3.2)
We present the first publicly released catalog of sources obtained from the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX). HETDEX is an integral field spectroscopic... -
FSRQs & BL Lac objects from 4FGL blazar candidates
Among the ~2157 unassociated sources in the third data release (DR3) of the fourth Fermi catalog, ~1200 were observed with the Neil Gehrels Swift Observatory pointed... -
OJ 287 polarisation in radio, mm and optical
OJ 287 is a bright blazar with century-long observations, and one of the strongest candidates to host a supermassive black hole binary. Its polarisation behaviour between 2015... -
Multiwavelength ctp of Fermi gamma-ray sources
In this paper, we searched for multi-wavelength (X-ray, optical and radio) counterparts to the unassociated gamma-ray sources (UGS) of the Fermi 4FGL-DR4 catalog. The main goal... -
Neutral gas winds of MaNGA-DR15 galaxies
This paper investigates the neutral gas phase of galactic winds via the Na I D{lambda}{lambda}5890, 5895{AA} feature within z ~ 0.04 MaNGA galaxies and directly compares their... -
Study of LQGs with SDSS-DR7-QSO data
Correlated orientations of quasar optical and radio polarization, and of radio jets, have been reported on Gpc scales, possibly arising from intrinsic alignment of spin axes.... -
Identifying CT-AGNs in the COSMOS. I.
Compton-thick active galactic nuclei (CT-AGNs), characterized by a significant absorption with column densities of N_H_>=1.5x10^24^cm^-2^, emit feeble X-ray radiation, even... -
SRG/eROSITA CT AGN cand. in Lockman Hole
We search for reflection-dominated Compton-thick active galactic nuclei (CT AGN) candidates in the Lockman Hole region using the data of SRG/eROSITA Lockman Hole survey. We... -
NESMP sources main variability characteristics
Compact radio sources can show remarkable flux density variations at GHz frequencies on a wide range of timescales. The origin of the variability is a mix of source-intrinsic... -
Spectroscopy of AGNs in low-mass galaxies
The origins of supermassive black holes (SMBHs) at the centers of massive galaxies are a topic of intense investigation. One way to address this subject is to identify the seeds... -
Radio core dominance of Fermi/LAT-detected AGNs
We present a sample of 4388 AGNs with available radio core-dominance parameters-defined as the ratio of the core flux densities to the extended ones, R=S_core_/S_ext._ - which... -
The Million Quasars (Milliquas) catalogue, version 8
This is a compendium of 907144 type-I QSOs and AGN, largely complete from the literature to 30 June 2023. 66,026 QSO candidates are also included, calculated via radio/X-ray... -
The Million Quasars (Milliquas) catalogue, version 7.2
This is a compendium of 829666 type-I QSOs and AGN, largely complete from the literature to 30 April 2021 including SDSS-DR16 quasars and VLASS radio. Also included are 703348... -
Extragalactic linear polarization meas. agglomeration
In the framework of the Standard Model Extension (SME), we present improved constraints on anisotropic Lorentz invariance and Charge-Parity-Time (CPT) violation by searching for...