1,502 datasets found

Changing-state active galactic nuclei (CSAGNs) exhibit rapid variability, with mass accretion rates that can change by several orders of magnitude in a few years. This provides...

The European Archive of the James Webb Space Telescope (eJWST) provides access to all data collected by The James Webb Space Telescope (JWST). JWST's capabilities span from...

We present an analysis of the X-ray active galactic nucleus (AGN) population in a sample of seven massive galaxy clusters in the redshift range 0.35<z<0.45. We utilize...

The Subarcsecond mid-infrared (MIR) atlas of local active galactic nuclei (AGN) is a collection of all available N- and Q-band images obtained at ground-based 8-meter class...

The First Byurakan Survey (FBS) is the largest and the first systematic objective prism survey of the extragalactic sky. It covers 17,000 sq.deg. in the Northern sky together...

description: VOEvent alerts produced from transient detections resulting from observations with the NASA Fermi Large Area Telescope. Events should be reported within tens to of...

To date, three nuclear transients have been associated with high-energy neutrino events. These transients are generally thought to be powered by tidal disruptions of stars...

We investigated the interplay between dense molecular gas, star formation, and active galactic nucleus (AGN) feedback in the luminous IR galaxy NGC 1068 at sub-kiloparsec...

The nearby dwarf galaxy POX 52 at z=0.021 hosts an active galactic nucleus (AGN) with a black hole (BH) mass of M_BH_~10^5-6^M_{sun} and an Eddington ratio of ~0.1-1. This...

We investigate the role of galactic bars in fuelling and triggering Active Galactic Nucleus (AGN) in disc galaxies up to z~0.8. We utilise a Deep Learning model, fine-tuned on...

The fundamental plane of black hole activity describes the correlation between radio luminosity (L_R_), X-ray luminosity (L_X_), and black hole mass (M_BH_). It reflects a...

These FITS images were generated with the IDL package MIRphot [Asmus2014] by extraction (and combination) of the sub-images from the chopped/nodded total images from COMICS,...

First Byurakan survey plate scan service

This table contains basic metadata as well as the spectra from the Digital First Byurakan Survey (DFBS).

The AGN STORM 2 campaign is a large, multiwavelength reverberation mapping project designed to trace out the structure of Mrk 817 from the inner accretion disk to the broad...

It is widely believed that the cool gas clouds traced by MgII absorption, within a velocity offset of 5000km/s relative to the background quasar are mostly associated with the...

We investigated the connection between the mid-infrared (MIR) and optical spectral characteristics in a sample of 82 Type 1 active galactic nuclei (AGNs), observed with Infrared...

We present a new analysis of the Palomar-Green quasar sample based on Spitzer and Herschel observations. (i) Assuming polycyclic aromatic hydrocarbon (PAH)-based star formation...

We present a sample of 74 radio sources with recurrent jet activity. The sample consists of 67 galaxies, 2 quasars and 5 unidentified sources, selected from the published data...

To fully understand cosmic black hole growth, we need to constrain the population of heavily obscured active galactic nuclei (AGNs) at the peak of cosmic black hole growth...