Hierarchical black hole mergers in active galactic nuclei by Yang, Y, Bartos, I, Gayathri, V, Ford, KES, Haiman, Z, Klimenko, S, Kocsis, B, Márka, S, Márka, Z, McKernan, B, O'Shaughnessy, R

“…Here we show that if migration traps develop in the accretion disks of active galactic nuclei (AGNs) and promote the mergers of their captive black holes, the majority of black holes within disks will undergo hierarchical mergers—with one of the black holes being the remnant of a previous merger. 40% of AGN-assisted mergers detected by LIGO/Virgo will include a black hole with mass ≳ 50 M⊙, the mass limit from stellar core collapse. …”

X-ray Absorption and Reflection in Active Galactic Nuclei by Turner, T, Miller, L

“…X-ray spectroscopy offers an opportunity to study the complex mixture of emitting and absorbing components in the circumnuclear regions of active galactic nuclei, and to learn about the accretion process that fuels AGN and the feedback of material to their host galaxies. …”

Rapid star formation in the presence of active galactic nuclei by Lintott, C, Viti, S

“…The deficit in HCN is conventionally explained by an excess of infrared radiation due to active galactic nuclei (AGNs). We show in this Letter not only that the presence of AGNs cannot account for the excess of IR over molecular luminosity, but also that the observed abundance of HCN is in fact consistent with a population of stars forming from near-primordial gas. © 2006. …”

The suppression of star formation by powerful active galactic nuclei. by Page, M, Symeonidis, M, Vieira, J, Altieri, B, Amblard, A, Arumugam, V, Aussel, H, Babbedge, T, Blain, A, Bock, J, Boselli, A, Buat, V, Castro-Rodríguez, N, Cava, A, Chanial, P, Clements, D, Conley, A, Conversi, L, Cooray, A, Dowell, C, Dubois, E, Dunlop, J, Dwek, E, Dye, S, Eales, S

“…The old, red stars that constitute the bulges of galaxies, and the massive black holes at their centres, are the relics of a period in cosmic history when galaxies formed stars at remarkable rates and active galactic nuclei (AGN) shone brightly as a result of accretion onto black holes. …”

The suppression of star formation by powerful active galactic nuclei by Page, M, Symeonidis, M, Vieira, J, Altieri, B, Amblard, A, Arumugam, V, Aussel, H, Babbedge, T, Blain, A, Bock, J, Boselli, A, Buat, V, Castro-Rodríguez, N, Cava, A, Chanial, P, Clements, D, Conley, A, Conversi, L, Cooray, A, Dowell, C, Dubois, E, Dunlop, J, Dwek, E, Dye, S, Eales, S

“…The old, red stars that constitute the bulges of galaxies, and the massive black holes at their centres, are the relics of a period in cosmic history when galaxies formed stars at remarkable rates and active galactic nuclei (AGN) shone brightly as a result of accretion onto black holes. …”

Rapid Star Formation in the Presence of Active Galactic Nuclei by Lintott, C, Viti, S

Science of Active Galactic Nuclei with the GTC and CanariCam by Levenson, N, Packham, C, Herrero, A, Aretxaga, I, Colina, L, Santos, T, Elitzur, M, Mason, R, Perlman, E, Radomski, J, Roche, P, Espinosa, J, Young, S, Telesco, C

“…One of the science drivers for Canari-Cam is the study of active galactic nuclei (AGN). We will exploit the instrument's high sensitivity in imaging,spectroscopy, and polarimetry modes to answer fundamental questions of AGN and their host galaxies. …”

Eccentric black hole mergers in active galactic nuclei by Tagawa, H, Kocsis, B, Haiman, Z, Bartos, I, Omukai, K, Samsing, J

“…The astrophysical origin of gravitational wave transients is a timely open question in the wake of discoveries by the Laser Interferometer Gravitational-Wave Observatory (LIGO)/Virgo. In active galactic nuclei (AGNs), binaries form and evolve efficiently by interaction with a dense population of stars and the gaseous AGN disk. …”

Far-ultraviolet Spectroscopy of Active Galactic Nuclei with ASTROSAT/UVIT by Shrabani Kumar, G. C. Dewangan, K. P. Singh, P. Gandhi, I. E. Papadakis, P. Tripathi, L. Mallick

Subjects: “…Active galactic nuclei…”
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Photons to axion-like particles conversion in Active Galactic Nuclei by Fabrizio Tavecchio, Marco Roncadelli, Giorgio Galanti

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On the High-Energy Neutrino Emission from Active Galactic Nuclei by Emma Kun, Peter L. Biermann, Silke Britzen, László Á. Gergely

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Deficit of Hot Dust in Low-redshift Active Galactic Nuclei by Suyeon Son, Minjin Kim, Luis C. Ho

“…We assemble a broadband spectral energy distribution (SED) ranging from the optical to the mid-infrared of nearby active galactic nuclei (AGNs) at z < 0.4. The SED fitting analysis is performed using semiempirical templates derived from Palomar-Green quasars to classify the sample into normal, warm-dust-deficient (WDD), and hot-dust-deficient (HDD) AGNs. …”
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Broadband Multiwavelength Study of LHAASO-detected Active Galactic Nuclei by Ze-Rui Wang, Rui Xue, Dingrong Xiong, Hai-Qin Wang, Lu-Ming Sun, Fang-Kun Peng, Jirong Mao

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The Origin of Matter at the Base of Relativistic Jets in Active Galactic Nuclei by Gustavo E. Romero, Eduardo Gutiérrez

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High-Frequency Polarization Variability from Active Galactic Nuclei by Iván Martí-Vidal, Ciriaco Goddi

“…The observation of polarized emission from active galactic nuclei (AGN) and, in particular, its time evolution, also provides information about the critical role that magnetic fields may play in the process of jet launching and propagation. …”
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Observing—and Imaging—Active Galactic Nuclei with the Event Horizon Telescope by Vincent L. Fish, Kazunori Akiyama, Katherine L. Bouman, Andrew A. Chael, Michael D. Johnson, Sheperd S. Doeleman, Lindy Blackburn, John F. C. Wardle, William T. Freeman, the Event Horizon Telescope Collaboration

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The outer dusty edge of accretion disks in active galactic nuclei by Hermine Landt

Subjects: “…active galactic nuclei…”
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Meeting Summary: A 2017 View of Active Galactic Nuclei by Hagai Netzer

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Accretion of dissipative dark matter onto active galactic nuclei by Nadav Joseph Outmezguine, Oren Slone, Walter Tangarife, Lorenzo Ubaldi, Tomer Volansky

“…Abstract We examine the possibility that accretion of Dissipative Dark Matter (DDM) onto Active Galactic Nuclei (AGN) contributes to the growth rate of Super Massive Black Holes (SMBHs). …”
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Active Galactic Nuclei at All Wavelengths and from All Angles by Paolo Padovani

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