On the relationship between the cosmic web and the alignment of galaxies and AGN jets

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) (2025)

Authors:

S Lyla Jung, IH Whittam, MJ Jarvis, CL Hale, MN Tudorache, T Yasin

Abstract:

Abstract The impact of active galactic nuclei (AGN) on the evolution of galaxies explains the steep decrease in the number density of the most massive galaxies in the Universe. However, the fueling of the AGN and the efficiency of this feedback largely depend on their environment. We use data from the Low Frequency Array (LOFAR) Two-metre Sky Survey Data Release 2 (LoTSS DR2), the Dark Energy Spectroscopic Instrument (DESI) Legacy Imaging Surveys, and the Sloan Digital Sky Survey (SDSS) DR12 to make the first study of the orientations of radio jets and their optical counterpart in relation to the cosmic web environment. We find that close to filaments ($\lesssim 11 \, \rm Mpc$), galaxies tend to have their optical major axes aligned with the nearest filaments. On the other hand, radio jets, which are generally aligned perpendicularly to the optical major axis of the host galaxy, show more randomised orientations with respect to host galaxies within $\lesssim 8 \, \rm Mpc$ of filaments. These results support the scenario that massive galaxies in cosmic filaments grow by numerous mergers directed along the orientation of the filaments while experiencing chaotic accretion of gas onto the central black hole. The AGN-driven jets consequently have a strong impact preferentially along the minor axes of dark matter halos within filaments. We discuss the implications of these results for large-scale radio jet alignments, intrinsic alignments between galaxies, and the azimuthal anisotropy of the distribution of circumgalactic medium and anisotropic quenching.

Euclid preparation

Astronomy & Astrophysics EDP Sciences 695 (2025) a229

Authors:

L Zalesky, CJR McPartland, JR Weaver, S Toft, DB Sanders, B Mobasher, N Suzuki, I Szapudi, I Valdes, G Murphree, N Chartab, N Allen, S Taamoli, SWJ Barrow, O Chávez Ortiz, SL Finkelstein, S Gwyn, M Sawicki, HJ McCracken, D Stern, H Dannerbauer, B Altieri, S Andreon, N Auricchio, C Baccigalupi, M Baldi, S Bardelli, R Bender, C Bodendorf, D Bonino, E Branchini, M Brescia, J Brinchmann, S Camera, V Capobianco, C Carbone, J Carretero, S Casas, FJ Castander, M Castellano, G Castignani, S Cavuoti, A Cimatti, C Colodro-Conde, G Congedo, CJ Conselice, L Conversi, Y Copin, L Corcione, F Courbin, HM Courtois, A Da Silva, H Degaudenzi, G De Lucia, AM Di Giorgio, J Dinis, F Dubath, CAJ Duncan, X Dupac, S Dusini, M Farina, S Farrens, S Ferriol, S Fotopoulou, M Frailis, E Franceschi, S Galeotta, B Garilli, W Gillard, B Gillis, C Giocoli, P Gómez-Alvarez, A Grazian, F Grupp, SVH Haugan, H Hoekstra, W Holmes, I Hook, F Hormuth, A Hornstrup, P Hudelot, K Jahnke, B Joachimi, E Keihänen, S Kermiche, A Kiessling, M Kilbinger, B Kubik, K Kuijken, M Kümmel, M Kunz, H Kurki-Suonio, R Laureijs, S Ligori, PB Lilje, V Lindholm, I Lloro, G Mainetti, D Maino, E Maiorano, O Mansutti, O Marggraf, K Markovic, M Martinelli, N Martinet, F Marulli, R Massey, S Maurogordato, S Mei, Y Mellier, M Meneghetti, E Merlin, G Meylan, M Moresco, L Moscardini, E Munari, C Neissner, S-M Niemi, JW Nightingale, C Padilla, S Paltani, F Pasian, K Pedersen, WJ Percival, V Pettorino, S Pires, G Polenta, M Poncet, LA Popa, L Pozzetti, F Raison, R Rebolo, A Renzi, J Rhodes, G Riccio, E Romelli, M Roncarelli, E Rossetti, R Saglia, Z Sakr, D Sapone, R Scaramella, M Schirmer, P Schneider, T Schrabback, A Secroun, E Sefusatti, G Seidel, S Serrano, C Sirignano, G Sirri, L Stanco, J Steinwagner, P Tallada-Crespí, HI Teplitz, I Tereno, R Toledo-Moreo, F Torradeflot, I Tutusaus, EA Valentijn, L Valenziano, T Vassallo, G Verdoes Kleijn, A Veropalumbo, Y Wang, J Weller, G Zamorani, E Zucca, M Bolzonella, A Boucaud, E Bozzo, C Burigana, D Di Ferdinando, JA Escartin Vigo, R Farinelli, J Gracia-Carpio, N Mauri, AA Nucita, V Scottez, M Tenti, M Viel, M Wiesmann, Y Akrami, V Allevato, S Anselmi, M Ballardini, M Bethermin, A Blanchard, L Blot, S Borgani, S Bruton, R Cabanac, A Calabro, A Cappi, CS Carvalho, T Castro, KC Chambers, R Chary, S Contarini, T Contini, AR Cooray, B De, G Desprez, A Díaz-Sánchez, S Di Domizio, H Dole, S Escoffier, AG Ferrari, I Ferrero, F Finelli, F Fornari, L Gabarra, K Ganga, J García-Bellido, E Gaztanaga, F Giacomini, G Gozaliasl, A Hall, WG Hartley, H Hildebrandt, J Hjorth, M Huertas-Company, O Ilbert, A Jimenez Muñoz, JJE Kajava, V Kansal, D Karagiannis, CC Kirkpatrick, L Legrand, G Libet, A Loureiro, J Macias-Perez, G Maggio, M Magliocchetti, C Mancini, F Mannucci, R Maoli, CJAP Martins, S Matthew, L Maurin, RB Metcalf, P Monaco, C Moretti, G Morgante, Nicholas A Walton, J Odier, L Patrizii, A Pezzotta, M Pöntinen, V Popa, C Porciani, D Potter, P Reimberg, I Risso, P-F Rocci, M Sahlén, C Scarlata, A Schneider, M Sereno, A Silvestri, P Simon, A Spurio Mancini, SA Stanford, C Tao, G Testera, R Teyssier, S Tosi, A Troja, M Tucci, C Valieri, J Valiviita, D Vergani, G Verza, IA Zinchenko

The jet paths of radio active galactic nuclei and their cluster weather

Astronomy & Astrophysics EDP Sciences 695 (2025) a178

Authors:

E Vardoulaki, V Backöfer, A Finoguenov, F Vazza, J Comparat, G Gozaliasl, IH Whittam, CL Hale, JR Weaver, AM Koekemoer, JD Collier, B Frank, I Heywood, S Sekhar, AR Taylor, S Pinjarkar, MJ Hardcastle, T Shimwell, M Hoeft, SV White, F An, F Tabatabaei, Z Randriamanakoto, MD Filipovic

MIGHTEE: Exploring the relationship between spectral index, redshift and radio luminosity

Monthly Notices of the Royal Astronomical Society (2025) staf209

Authors:

Siddhant Pinjarkar, Martin J Hardcastle, Dharam V Lal, Daniel JB Smith, José Afonso, Davi Barbosa, Catherine L Hale, Matt J Jarvis, Sthabile Kolwa, Eric Murphy, Mattia Vaccari, Imogen H Whittam

On the relationship between the cosmic web and the alignment of galaxies and AGN jets

ArXiv 2502.0373 (2025)

Authors:

Seoyoung Lyla Jung, IH Whittam, MJ Jarvis, CL Hale, MN Tudorache, T Yasin