Early-type galaxies in different environments: an H I view by Oosterloo, T, Morganti, R, Crocker, A, Jutte, E, Cappellari, M, de Zeeuw, T, Krajnovic, D, McDermid, R, Kuntschner, H, Sarzi, M, Weijmans, A

“…In many objects this emission is from a low-luminosity active galactic nucleus (AGN), and in some it is consistent with the observed star formation. …”

Lyman Continuum Leakers in the AstroSat Ultraviolet Deep Field: Extreme-ultraviolet Emitters at the Cosmic Noon by Suraj Dhiwar, Kanak Saha, Soumil Maulick, Brent M. Smith, Chayan Mondal, Harry I. Teplitz, Marc Rafelski, Rogier A. Windhorst

“…We report the direct detection of Lyman continuum (LyC) emission from nine galaxies and one active galactic nucleus at z ∼ 1.1–1.6 in the GOODS-North field using deep observations from the Ultraviolet Imaging Telescope (UVIT) on board AstroSat. …”
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The NuSTAR View of Perseus: The Intracluster Medium and a Peculiar Hard Excess by Samantha Creech, Daniel R. Wik, Steven Rossland, Ayşegül Tümer, Ka-Wah Wong, Stephen A. Walker

“…As the brightest galaxy cluster in the X-ray sky, Perseus is an excellent target for studying the intracluster medium (ICM), but until recently, its active galactic nucleus (AGN) made studies of the diffuse emission near its center nearly impossible to accomplish with NuSTAR, due to the extended wings of NuSTAR's point-spread function. …”
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Identification of 4FGL Uncertain Sources at Higher Resolutions with Inverse Discrete Wavelet Transform by Haitao Cao, Hubing Xiao, Zhijian Luo, Xiangtao Zeng, Junhui Fan

“…In this work, we focused on the task of finding active galactic nucleus (AGN) candidates and identifying BL Lacertae objects (BL Lac) or flat spectrum radio quasar (FSRQ) candidates from the 4FGL_DR3 uncertain sources. …”
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Starburst-induced Gas–Star Kinematic Misalignment by Elia Cenci, Robert Feldmann, Jindra Gensior, James S. Bullock, Jorge Moreno, Luigi Bassini, Mauro Bernardini

“…A commonly proposed scenario for the formation of a misaligned component requires any preexisting gas disk to be removed, via flybys or ejective feedback from an active galactic nucleus. In this Letter, we study the evolution of a Milky Way mass galaxy in the FIREbox cosmological volume that displays a thin, counterrotating gas disk with respect to its stellar component at low redshift. …”
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Active Galactic Nuclei and Host Galaxies in COSMOS-Web. I. NIRCam Images, Point-spread-function Models and Initial Results on X-Ray-selected Broad-line AGNs at 0.35 ≲ z ≲ 3.5 by Ming-Yang Zhuang, Junyao Li, Yue Shen

“…Combining NIRCam with archival Hubble Space Telescope imaging, we perform multiwavelength active galactic nucleus (AGN)+host image decomposition to study the properties of 143 X-ray-selected ( L _bol = 10 ^43.6–47.2 erg s ^−1 ) broad-line AGNs at 0.35 ≲ z ≲ 3.5. …”
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The Nature of LoBAL QSOs. II. HST/WFC3 Observations Reveal Host Galaxies Dominated by Mergers by Mariana S. Lazarova, Gabriela Canalizo, Mark Lacy, Wyatt Behn, Kaitlyn Raub, Vardha N. Bennert, Duncan Farrah

“…Low-ionization broad absorption line QSOs (LoBALs) are suspected to be merging systems in which extreme, active galactic nucleus-driven outflows have been triggered. …”
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The Magellan M2FS Spectroscopic Survey of High-redshift Galaxies: The Brightest Lyman-break Galaxies at z ∼ 6 by Shuqi Fu, Linhua Jiang, Yuanhang Ning, Weiyang Liu, Zhiwei Pan

“…Using deep X-ray images, we do not find evidence of strong active galactic nucleus (AGN) activity in these galaxies, but our constraint is loose, and we are not able to rule out the possibility of any weak AGN activity.…”
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Far-ultraviolet morphology of star-forming filaments in cool core brightest cluster galaxies by Tremblay, G. R., O'Dea, C. P., Baum, S. A., Mittal, R., Combes, F., Li, Y., McNamara, B. R., Bremer, M. N., Clarke, T. E., Donahue, M., Edge, A. C., Fabian, A. C., Hamer, S. L., Hogan, M. T., Oonk, J. B. R., Quillen, A. C., Sanders, J. S., Salomé, P., Voit, G. M., McDonald, Michael A.

“…The FUV data are compared with X-ray, Lyα, narrow-band Hα, broad-band optical/IR, and radio maps, providing a high spatial resolution atlas of star formation locales relative to the ambient hot (∼107–8 K) and warm ionized (∼104 K) gas phases, as well as the old stellar population and radio-bright active galactic nucleus (AGN) outflows. Nearly half of the sample possesses kpc-scale filaments that, in projection, extend towards and around radio lobes and/or X-ray cavities. …”
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THE NUCLEAR SPECTROSCOPIC TELESCOPE ARRAY (NuSTAR) HIGH-ENERGY X-RAY MISSION by Chakrabarty, Deepto

“…Using its unprecedented combination of sensitivity and spatial and spectral resolution, NuSTAR will pursue five primary scientific objectives: (1) probe obscured active galactic nucleus (AGN) activity out to the peak epoch of galaxy assembly in the universe (at z[< over ~]2) by surveying selected regions of the sky; (2) study the population of hard X-ray-emitting compact objects in the Galaxy by mapping the central regions of the Milky Way; (3) study the non-thermal radiation in young supernova remnants, both the hard X-ray continuum and the emission from the radioactive element [superscript 44]Ti; (4) observe blazars contemporaneously with ground-based radio, optical, and TeV telescopes, as well as with Fermi and Swift, to constrain the structure of AGN jets; and (5) observe line and continuum emission from core-collapse supernovae in the Local Group, and from nearby Type Ia events, to constrain explosion models. …”
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HST-COS SPECTROSCOPY OF THE COOLING FLOW IN A1795—EVIDENCE FOR INEFFICIENT STAR FORMATION IN CONDENSING INTRACLUSTER GAS by Roediger, Joel, Veilleux, Sylvain, Ehlert, Steven, McDonald, Michael A.

“…These data, which span 1025 Å < λrest < 1700 Å, allow for the simultaneous modeling of the young stellar populations and the intermediate-temperature (10[superscript 5.5] K) gas in this filament, which is far removed (~30 kpc) from the direct influence of the central active galactic nucleus. Using a combination of UV absorption line indices and stellar population synthesis modeling, we find evidence for ongoing star formation, with the youngest stars having ages of 7.5 [+2.5 over -2.0] Myr and metallicities of 0.4 [+0.2 over -0.1] Z[subscript ☉]. …”
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AN HST/WFC3-UVIS VIEW OF THE STARBURST IN THE COOL CORE OF THE PHOENIX CLUSTER by McDonald, Michael A., Benson, Bradford A., Veilleux, Sylvain, Bautz, Marshall W., Reichardt, Christian L.

“…The spectral energy distribution in the inner part of the galaxy, as well as along the extended filaments, is a smooth continuum and is consistent with that of a star-forming galaxy, suggesting that the extended, filamentary emission is not due to the central active galactic nucleus, either from a large-scale ionized outflow or scattered polarized UV emission, but rather a massive population of young stars. …”
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A MULTIWAVELENGTH STUDY OF THE HIGH SURFACE BRIGHTNESS HOT SPOT IN PKS 1421–490 by Godfrey, L. E. H., Bicknell, G. V., Lovell, J. E. J., Jauncey, D. L., Gelbord, Jonathan, Schwartz, D. A., Birkinshaw, M., Georganopoulos, Markos, Murphy, David W., Perlman, E. S., Worrall, D. M., Marshall, Herman

“…Long Baseline Array imaging of the z = 0.663 broadline radio galaxy PKS 1421–490 reveals a 400 pc diameter high surface brightness hot spot at a projected distance of ~40 kpc from the active galactic nucleus. The isotropic X-ray luminosity of the hot spot, L 2-10 keV = 3 × 10[superscript 44] ergs s-1, is comparable to the isotropic X-ray luminosity of the entire X-ray jet of PKS 0637–752, and the peak radio surface brightness is hundreds of times greater than that of the brightest hot spot in Cygnus A. …”
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A VERY DEEP CHANDRA OBSERVATION OF A1795: THE COLD FRONT AND COOLING WAKE by Ehlert, Steven, David, Laurence P., McDonald, Michael A., Bautz, Marshall W., Miller, Eric D

“…Further simulations of cool core sloshing and active galactic nucleus feedback operating in concert with one another will be necessary to understand how such a dynamic cool core region may have originated and why the Hα emission is so localized with respect to the cool X-ray gas.…”
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Discovery of H I gas in a young radio galaxy at z = 0.44 using the Australian Square Kilometre Array Pathfinder by Allison, J, Sadler, E, Moss, V, Whiting, M, Hunstead, R, Pracy, M, Curran, S, Croom, S, Glowacki, M, Morganti, R, Shabala, S, Zwaan, M, Allen, G, Amy, S, Axtens, P, Ball, L, Bannister, K, Barker, S, Bell, M, Bock, D, Bolton, R, Bowen, M, Boyle, B, Braun, R, Broadhurst, S, Brodrick, D, Brothers, M, Brown, A, Bunton, J, Cantrall, C, Chapman, J, Cheng, W, Chippendale, A, Chung, Y, Cooray, F, Cornwell, T, Deboer, D, Diamond, P, Edwards, P, Ekers, R, Feain, I, Ferris, R, Forsyth, R, Gough, R, Grancea, A, Gupta, N, Guzman, J, Hampson, G, Harvey-Smith, L, Haskins, C, Hay, S, Hayman, D, Heywood, I, Hotan, A, Hoyle, S, Humphreys, B, Indermuehle, B, Jacka, C, Jackson, C, Jackson, S, Jeganathan, K, Johnston, S, Joseph, J, Kendall, R, Kesteven, M, Kiraly, D, Koribalski, B, Leach, M, Lenc, E, Lensson, E, Mackay, S, Macleod, A, Marquarding, M, Marvil, J, McClure-griffiths, N, McConnell, D, Mirtschin, P, Norris, R, Neuhold, S, Ng, A, O'Sullivan, J, Pathikulangara, J, Pearce, S, Phillips, C, Popping, A, Qiao, R, Reynolds, J, Roberts, P, Sault, R, Schinckel, A, Serra, P, Shaw, R, Shields, M, Shimwell, T, Storey, M, Sweetnam, T, Troup, E, Turner, B, Tuthill, J, Tzioumis, A, Voronkov, M, Westmeier, T, Wilson, C

“…Archival data from the XMM–Newton satellite exhibit an absorbed X-ray spectrum that is consistent with a high column density obscuring medium around the active galactic nucleus. The H I absorption profile is complex, with four distinct components ranging in width from 5 to 300 km s−1 and fractional depths from 0.2 to 20 per cent. …”

Radiative Transfer in Lyα Nebulae. I. Modeling a Continuous or Clumpy Spherical Halo with a Central Source by Seok-Jun Chang, Yujin Yang, Kwang-Il Seon, Ann Zabludoff, Hee-Won Lee

“…For the first time, we consider both smooth and clumpy distributions of halo gas, as well as a range of outflow speeds, total H i column densities, H i spatial concentrations, and central source galaxies (e.g., with Ly α line widths corresponding to those typical of active galactic nucleus or star-forming galaxies). We compute the spatial-frequency diffusion and the polarization of the Ly α photons scattered by atomic hydrogen. …”
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Star Formation in the Dwarf Seyfert Galaxy NGC 4395: Evidence for Both AGN and SN Feedback? by Payel Nandi, C. S. Stalin, D. J. Saikia, S. Muneer, George Mountrichas, Dominika Wylezalek, R. Sagar, Markus Kissler-Patig

“…We present a detailed multiwavelength study of star formation in the dwarf galaxy NGC 4395, which hosts an active galactic nucleus (AGN). From our observations with the Ultra-Violet Imaging Telescope, we have compiled a catalog of 284 star-forming (SF) regions, out of which we could detect 120 SF regions in H α observations. …”
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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

“…This catalog contains four blazars and a possible LINER-type active galactic nucleus (AGN) counterpart. In this work, we establish averaged multiwavelength spectral energy distributions (SEDs) by combining data from the Fermi-Large Area Telescope, Swift, Zwicky Transient Facility, and Wide-field Infrared Survey Explorer (WISE) covering the same period as the LHAASO detection. …”
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Discovery of Kiloparsec-scale Semirelativistic Fe Kα Complex Emission in NGC 5728 by Anna Trindade Falcao, G. Fabbiano, M. Elvis, A. Paggi, W. P. Maksym, M. Karovska

“….″5–8″, 300–1600 pc) hard X-ray emission of NGC 5728, the host galaxy of a Compton-thick active galactic nucleus. We find spectrally and spatially resolved features in the Fe K α complex (5.0–7.5 keV) redward and blueward of the neutral Fe line at 6.4 keV in the extended narrow-line region bicone. …”
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Molecular Outflows in z > 6 Unobscured QSO Hosts Driven by Star Formation by Kirsty M. Butler, Paul P. van der Werf, Theodoros Topkaras, Matus Rybak, Bram P. Venemans, Fabian Walter, Roberto Decarli

“…We do not find evidence, nor require additional input from the central active galactic nucleus (AGN) to drive the molecular outflow in J2310+1855, but we cannot rule out an AGN contribution in P183+05 if a significant AGN contribution to L _FIR is assumed and/or if the outflow covering fraction is high (≥53%), which evidence from the literature suggests is unlikely in these sources. …”
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