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HI Intensity Mapping with the MIGHTEE Survey: First Results of the H i Power Spectrum

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

Authors:

Aishrila Mazumder, Laura Wolz, Zhaoting Chen, Sourabh Paul, Mario G Santos, Matt Jarvis, Junaid Townsend, Srikrishna Sekhar, Russ Taylor

Abstract:

Abstract We present the first results of the H i intensity mapping power spectrum analysis with the MeerKAT International GigaHertz Tiered Extragalactic Exploration (MIGHTEE) survey. We use data covering ∼ 4 square degrees in the COSMOS field using a frequency range 962.5 MHz to 1008.42 MHz, equivalent to H i emission in 0.4 < z < 0.48. The data consists of 15 pointings with a total of 94.2 hours on-source. We verify the suitability of the MIGHTEE data for H i intensity mapping by testing for residual systematics across frequency, baselines and pointings. We also vary the window used for H i signal measurements and find no significant improvement using stringent Fourier mode cuts. We compute the H i power spectrum at scales 0.5 Mpc−1 ≲ k ≲ 10 Mpc−1 in auto-correlation as well as cross-correlation between observational scans using power spectrum domain averaging for pointings. We report consistent upper limits of 29.8  mK2Mpc3 from the 2σ cross-correlation measurements and 25.82 mK2Mpc3 from auto-correlation at k ∼2 Mpc−1.The low signal-to-noise in this data potentially limits our ability to identify residual systematics, which will be addressed in the future by incorporating more data in the analysis.
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SYREN-NEW: Precise formulae for the linear and nonlinear matter power spectra with massive neutrinos and dynamical dark energy

Astronomy & Astrophysics EDP Sciences 698 (2025) a1

Authors:

Ce Sui, Deaglan J Bartlett, Shivam Pandey, Harry Desmond, Pedro G Ferreira, Benjamin D Wandelt
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Colloquium: The Cosmic Dipole Anomaly

(2025)

Authors:

Nathan Secrest, Sebastian von Hausegger, Mohamed Rameez, Roya Mohayaee, Subir Sarkar
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Euclid

Astronomy & Astrophysics EDP Sciences 697 (2025) a5

Authors:

FJ Castander, P Fosalba, J Stadel, D Potter, J Carretero, P Tallada-Crespí, L Pozzetti, M Bolzonella, GA Mamon, L Blot, K Hoffmann, M Huertas-Company, P Monaco, EJ Gonzalez, G De Lucia, C Scarlata, M-A Breton, L Linke, C Viglione, S-S Li, Z Zhai, Z Baghkhani, K Pardede, C Neissner, R Teyssier, M Crocce, I Tutusaus, L Miller, G Congedo, A Biviano, M Hirschmann, A Pezzotta, H Aussel, H Hoekstra, T Kitching, WJ Percival, L Guzzo, Y Mellier, PA Oesch, RAA Bowler, S Bruton, V Allevato, V Gonzalez-Perez, M Manera, S Avila, A Kovács, N Aghanim, B Altieri, A Amara, L Amendola, S Andreon, N Auricchio, C Baccigalupi, M Baldi, A Balestra, S Bardelli, R Bender, F Bernardeau, C Bodendorf, D Bonino, E Branchini, M Brescia, J Brinchmann, S Camera, V Capobianco, C Carbone, S Casas, M Castellano, G Castignani, S Cavuoti, A Cimatti, C Colodro-Conde, CJ Conselice, L Conversi, Y Copin, L Corcione, F Courbin, HM Courtois, A Da Silva, H Degaudenzi, AM Di Giorgio, J Dinis, M Douspis, F Dubath, CAJ Duncan, X Dupac, S Dusini, A Ealet, M Farina, S Farrens, S Ferriol, S Fotopoulou, N Fourmanoit, M Frailis, E Franceschi, P Franzetti, S Galeotta, W Gillard, B Gillis, C Giocoli, P Gómez-Alvarez, BR Granett, A Grazian, F Grupp, SVH Haugan, MS Holliman, W Holmes, I Hook, F Hormuth, A Hornstrup, P Hudelot, S Ilić, K Jahnke, M Jhabvala, B Joachimi, E Keihänen, S Kermiche, A Kiessling, M Kilbinger, R Kohley, B Kubik, M Kümmel, M Kunz, H Kurki-Suonio, O Lahav, R Laureijs, D Le Mignant, P Liebing, S Ligori, PB Lilje, V Lindholm, I Lloro, D Maino, E Maiorano, O Mansutti, S Marcin, O Marggraf, K Markovic, M Martinelli, N Martinet, F Marulli, R Massey, DC Masters, S Maurogordato, HJ McCracken, E Medinaceli, S Mei, M Melchior, M Meneghetti, E Merlin, G Meylan, JJ Mohr, M Moresco, L Moscardini, E Munari, R Nakajima, RC Nichol, S-M Niemi, C Padilla, K Paech, S Paltani, F Pasian, JA Peacock, K Pedersen, V Pettorino, S Pires, G Polenta, M Poncet, LA Popa, F Raison, R Rebolo, A Renzi, J Rhodes, G Riccio, E Romelli, M Roncarelli, C Rosset, E Rossetti, B Rusholme, R Saglia, Z Sakr, AG Sánchez, D Sapone, JA Schewtschenko, M Schirmer, P Schneider, T Schrabback, M Scodeggio, A Secroun, E Sefusatti, G Seidel, S Serrano, C Sirignano, G Sirri, L Stanco, J-L Starck, J Steinwagner, AN Taylor, HI Teplitz, I Tereno, R Toledo-Moreo, F Torradeflot, A Tsyganov, L Valenziano, T Vassallo, A Veropalumbo, Y Wang, J Weller, A Zacchei, G Zamorani, FM Zerbi, J Zoubian, E Zucca, A Boucaud, E Bozzo, C Burigana, M Calabrese, P Casenove, D Di Ferdinando, JA Escartin Vigo, G Fabbian, F Finelli, J Gracia-Carpio, S Matthew, N Mauri, M Pöntinen, C Porciani, V Scottez, M Tenti, M Viel, M Wiesmann, Y Akrami, S Anselmi, M Archidiacono, F Atrio-Barandela, E Aubourg, A Balaguera-Antolinez, M Ballardini, D Bertacca, M Bethermin, A Blanchard, H Böhringer, S Borgani, T Bouvard, R Cabanac, A Calabro, B Camacho Quevedo, G Canas-Herrera, A Cappi, F Caro, CS Carvalho, T Castro, KC Chambers, S Contarini, T Contini, AR Cooray, M Costanzi, O Cucciati, S Davini, B De, S de la Torre, G Desprez, A Díaz-Sánchez, JJ Diaz, S Di Domizio, H Dole, S Escoffier, M Ezziati, AG Ferrari, PG Ferreira, I Ferrero, A Finoguenov, A Fontana, F Fornari, L Gabarra, K Ganga, J García-Bellido, T Gasparetto, E Gaztanaga, F Giacomini, F Gianotti, AH Gonzalez, G Gozaliasl, A Hall, WG Hartley, H Hildebrandt, J Hjorth, AD Holland, O Ilbert, S Joudaki, E Jullo, JJE Kajava, V Kansal, D Karagiannis, CC Kirkpatrick, J Le Graet, L Legrand, J Lesgourgues, TI Liaudat, A Loureiro, J Macias-Perez, M Magliocchetti, C Mancini, F Mannucci, R Maoli, CJAP Martins, L Maurin, RB Metcalf, M Migliaccio, M Miluzio, A Mora, C Moretti, G Morgante, S Nadathur, L Nicastro, Nicholas A Walton, M Oguri, L Patrizii, V Popa, A Pourtsidou, P Reimberg, I Risso, P-F Rocci, RP Rollins, M Sahlén, J Schaye, A Schneider, M Schultheis, M Sereno, F Shankar, A Shulevski, A Silvestri, P Simon, A Spurio Mancini, SA Stanford, K Tanidis, C Tao, N Tessore, G Testera, M Tewes, S Toft, S Tosi, A Troja, M Tucci, C Valieri, J Valiviita, D Vergani, F Vernizzi, G Verza, P Vielzeuf, JR Weaver, L Zalesky, P Dimauro, P-A Duc, Y Fang, AMN Ferguson, CM Gutierrez, I Kovačić, S Kruk, AMC Le Brun, A Montoro, C Murray, L Pagano, D Paoletti, E Sarpa, A Viitanen, J Martín-Fleitas, D Scott, LYA Yung
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Euclid

Astronomy & Astrophysics EDP Sciences 697 (2025) a2

Authors:

MS Cropper, A Al-Bahlawan, J Amiaux, S Awan, R Azzollini, K Benson, M Berthe, J Boucher, E Bozzo, C Brockley-Blatt, GP Candini, C Cara, RA Chaudery, RE Cole, P Danto, J Denniston, AM Di Giorgio, B Dryer, J-P Dubois, J Endicott, M Farina, E Galli, L Genolet, JPD Gow, P Guttridge, M Hailey, D Hall, C Harper, H Hoekstra, AD Holland, B Horeau, D Hu, RE James, A Khalil, R King, T Kitching, R Kohley, C Larcheveque, A Lawrenson, P Liebing, SJ Liu, J Martignac, R Massey, HJ McCracken, L Miller, N Murray, R Nakajima, S-M Niemi, JW Nightingale, S Paltani, A Pendem, A Philippon, C Plana, P Pool, S Pottinger, GD Racca, J Rhodes, A Rousseau, K Ruane, M Salatti, J-C Salvignol, A Sciortino, A Short, J Skottfelt, SJA Smit, I Swindells, M Szafraniec, PD Thomas, W Thomas, E Tommasi, S Tosti, F Visticot, DM Walton, G Willis, B Winter, N Aghanim, B Altieri, A Amara, S Andreon, N Auricchio, H Aussel, C Baccigalupi, M Baldi, A Balestra, S Bardelli, A Basset, R Bender, F Bernardeau, C Bodendorf, T Boenke, D Bonino, E Branchini, M Brescia, J Brinchmann, S Camera, V Capobianco, C Carbone, VF Cardone, J Carretero, R Casas, S Casas, FJ Castander, M Castellano, G Castignani, S Cavuoti, A Cimatti, C Colodro-Conde, G Congedo, CJ Conselice, L Conversi, Y Copin, F Courbin, HM Courtois, M Crocce, J-G Cuby, J-C Cuillandre, A Da Silva, H Degaudenzi, G De Lucia, J Dinis, C Dolding, M Douspis, CAJ Duncan, X Dupac, S Dusini, A Ealet, M Fabricius, S Farrens, S Ferriol, P Fosalba, S Fotopoulou, M Frailis, E Franceschi, P Franzetti, P-A Frugier, M Fumana, S Galeotta, B Garilli, K George, W Gillard, B Gillis, C Giocoli, P Gómez-Alvarez, BR Granett, A Grazian, F Grupp, L Guzzo, SVH Haugan, O Herent, J Hoar, MS Holliman, W Holmes, I Hook, F Hormuth, A Hornstrup, P Hudelot, S Ilić, K Jahnke, M Jhabvala, B Joachimi, E Keihänen, S Kermiche, A Kiessling, M Kilbinger, B Kubik, K Kuijken, M Kümmel, M Kunz, H Kurki-Suonio, O Lahav, R Laureijs, S Ligori, PB Lilje, V Lindholm, I Lloro, J Lorenzo Alvarez, G Mainetti, D Maino, E Maiorano, O Mansutti, S Marcin, O Marggraf, K Markovic, M Martinelli, N Martinet, F Marulli, DC Masters, S Maurogordato, E Medinaceli, S Mei, M Melchior, Y Mellier, M Meneghetti, E Merlin, G Meylan, JJ Mohr, M Moresco, L Moscardini, C Neissner, RC Nichol, T Nutma, C Padilla, K Paech, F Pasian, JA Peacock, K Pedersen, WJ Percival, V Pettorino, S Pires, G Polenta, M Poncet, LA Popa, L Pozzetti, F Raison, R Rebolo, A Refregier, A Renzi, G Riccio, Hans-Walter Rix, E Romelli, M Roncarelli, C Rosset, E Rossetti, HJA Rottgering, B Rusholme, R Saglia, Z Sakr, AG Sánchez, D Sapone, M Sauvage, R Scaramella, JA Schewtschenko, M Schirmer, P Schneider, T Schrabback, A Secroun, E Sefusatti, G Seidel, M Seiffert, S Serrano, C Sirignano, G Sirri, L Stanco, J-L Starck, J Steinwagner, P Tallada-Crespí, D Tavagnacco, AN Taylor, HI Teplitz, I Tereno, R Toledo-Moreo, F Torradeflot, I Tutusaus, EA Valentijn, L Valenziano, T Vassallo, G Verdoes Kleijn, A Veropalumbo, S Wachter, Y Wang, J Weller, G Zamorani, J Zoubian, E Zucca, A Biviano, M Bolzonella, A Boucaud, C Burigana, M Calabrese, P Casenove, D Di Ferdinando, JA Escartin Vigo, G Fabbian, R Farinelli, F Finelli, J Gracia-Carpio, H Israel, N Mauri, HN Nguyen-Kim, A Pezzotta, M Pöntinen, C Porciani, V Scottez, M Tenti, M Viel, M Wiesmann, Y Akrami, V Allevato, S Anselmi, E Aubourg, M Ballardini, D Bertacca, M Bethermin, A Blanchard, L Blot, S Borgani, AS Borlaff, S Bruton, R Cabanac, A Calabro, G Calderone, G Canas-Herrera, A Cappi, CS Carvalho, T Castro, KC Chambers, R Chary, S Contarini, AR Cooray, O Cordes, M Costanzi, O Cucciati, S Davini, B De, G Desprez, A Díaz-Sánchez, S Di Domizio, H Dole, S Escoffier, AG Ferrari, PG Ferreira, I Ferrero, A Finoguenov, A Fontana, F Fornari, L Gabarra, K Ganga, J García-Bellido, V Gautard, E Gaztanaga, F Giacomini, F Gianotti, G Gozaliasl, A Gregorio, A Hall, WG Hartley, H Hildebrandt, J Hjorth, M Huertas-Company, O Ilbert, A Jimenez Muñoz, S Joudaki, JJE Kajava, V Kansal, D Karagiannis, CC Kirkpatrick, F Lacasa, J Le Graet, L Legrand, G Libet, A Loureiro, J Macias-Perez, M Magliocchetti, C Mancini, F Mannucci, R Maoli, CJAP Martins, S Matthew, L Maurin, CJR McPartland, RB Metcalf, M Migliaccio, M Miluzio, P Monaco, C Moretti, G Morgante, S Nadathur, Nicholas A Walton, J Odier, M Oguri, L Patrizii, V Popa, D Potter, A Pourtsidou, P Reimberg, I Risso, P-F Rocci, RP Rollins, M Sahlén, C Scarlata, J Schaye, A Schneider, M Schultheis, M Sereno, F Shankar, G Sikkema, A Silvestri, P Simon, A Spurio Mancini, J Stadel, SA Stanford, K Tanidis, C Tao, N Tessore, G Testera, M Tewes, R Teyssier, S Toft, S Tosi, A Troja, M Tucci, C Valieri, J Valiviita, D Vergani, F Vernizzi, G Verza, P Vielzeuf, JR Weaver, L Zalesky, IA Zinchenko, M Archidiacono, F Atrio-Barandela, T Bouvard, F Caro, P Dimauro, P-A Duc, Y Fang, AMN Ferguson, T Gasparetto, CM Gutierrez, I Kovačić, S Kruk, AMC Le Brun, TI Liaudat, A Montoro, A Mora, C Murray, L Pagano, D Paoletti, E Sarpa, A Viitanen, J Lesgourgues, J Martín-Fleitas, D Scott
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