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The Astrophysical Journal Supplement Series, 2023 The main objective of this article, the first in a dedicated series, is to report basic results on systematic research of low-redshift optically selected SDSS Type 2 active galactic nuclei (AGNs) but with apparent optical variabilities.
XueGuang Zhang
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A Census of Photometrically Selected Little Red Dots at 4 < z < 9 in JWST Blank Fields
The Astrophysical JournalObservations with the James Webb Space Telescope (JWST) have uncovered numerous faint active galactic nuclei (AGN) at z ∼ 5 and beyond. These objects are key to our understanding of the formation of supermassive black holes (SMBHs), their coevolution ...
Vasily Kokorev +11 more
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The shortest detected intra-day variability of active galactic nuclei in the TESS survey
Astronomy & AstrophysicsContext. Active galactic nuclei (AGNs) are known to be variable in almost all wavelengths and timescales. The shortest AGN variability timescale can be used to probe the smallest scale structures within AGNs. Aims. We aim to measure the shortest detected
Yuk Heechan +2 more
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The Astrophysical JournalAccretion supermassive black holes in the center of active galaxies usually produce “jet”-collimated bipolar outflows of relativistic particles. Magnetic fields near the black hole event horizon may play a crucial role in the formation of jets/outflows ...
Yongyun Chen +6 more
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Astronomy & AstrophysicsDecomposing the contributions of active galactic nuclei (AGNs) from their host galaxies is essential for identifying AGN-dominated galaxies and accurately deriving key physical properties of both supermassive black holes (SMBHs) and their host galaxies ...
Chen Mi +5 more
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Nuclear activity in isolated galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 7 figures, 7 ...
Hernández-Ibarra, Francisco J. +5 more
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A study of active galaxies in groups of galaxies and in the field
Communications of the Byurakan Astrophysical Observatory, 2023 We study regions with radius of 500 pc around of the central radio galaxies from our sample. For this study were chosen about 30 nearby 3C radio galaxies of different FR types. We bring the maps of optical galaxies that are overlaid on the radio map of 3C radio source. It was used also the maps of these regions in all available wavelength.
R. R. Andreasyan +5 more
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Ultra-thick warm absorbers: Enlarging the parameter space of AGN ionised outflows
Astronomy & AstrophysicsContext. The analysis of X-ray absorption features in active galactic nuclei (AGN) provides a wealth of information about the physical properties of the matter surrounding supermassive black holes (SMBHs).
Middei R. +11 more
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The Classifications and Some Correlations for Fermi Blazars
Galaxies, 2016 In a recent paper, we constructed the spectral energy distributions (SEDs) for 1425 Fermi blazars. We classify them as low synchrotron peak sources (LSPs) if log ν p ( Hz ) ≤ 14.0, intermediate synchrotron peak sources (ISPs) if 14.0 <
Junhui Fan +5 more
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Astronomy & AstrophysicsWe present the results of VLT/MUSE integral-field spectroscopy of the radio galaxy 3C 313 at z = 0.459, combined with HST and Chandra images. The high-resolution optical and X-ray images show the presence of two sources separated by 0.″63 (3.7 kpc ...
Balmaverde Barbara +3 more
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