Laboratoire d'étude de l'Univers et des phénomènes eXtrêmes | LUX

• Communication dans un congrès

Status and future development of the COSMOCal Project for absolute CMB polarization calibration

Silvia Micheli, Alessia Ritacco, Alessandro Carones, Jonathan Aumont, Stefano Berta, Ludovico Bizzarri, François Boulanger, Andrea Catalano, Francesco Cuttaia, Anne Denis, François-Xavier Désert, Anne Laure Fontana, David González-Ovejero, Benedetta Kalemi, Nicoletta Krachmalnicoff, Samuel Leclercq, Thibaut Louis, Juan-Francisco Macías-Pérez, Bruno Maffei, Tania Mcnamara, Marina Migliaccio, Ludovic Montier, Pascal Morfin, Michel Moulin, Louise Mousset, Matteo Murgia, Ioannis Myserlis, Federico Nati, Pierluigi Ortu, Michel Pérault, Giampaolo Pisano, Tonino Pisanu, Nicolas Ponthieu, Sofia Savorgnano, Luca Terenzi, Jeanne Treuttel, Léo Vacher, Christophe Vescovi, Mario Zannoni

Cosmic Microwave Background (CMB) polarization measurements are pushing instrumental sensitivities to levels where calibration systematics become a dominant limitation. The large dynamic range between cosmological and Galactic emission prevents future experiments from relying only on diffuse sky…

SPIE Astronomical Telescopes + Instrumentation 2026, Jul 2026, Copenhagen, Sweden. ⟨hal-05701879⟩

• Pré-publication, Document de travail

Euclid Quick Data Release (Q1): The geometry of dark matter halos from extragalactic streams

N Starkman, J Nibauer, S Pearson, S Wu, M Walmsley, L Necib, J Bovy, F.R Marleau, E Sola, D Scott, B Altieri, S Andreon, N Auricchio, C Baccigalupi, M Baldi, A Balestra, S Bardelli, P Battaglia, A Biviano, M Bolzonella, E Branchini, M Brescia, J Brinchmann, S Camera, V Capobianco, C Carbone, J Carretero, S Casas, M Castellano, G Castignani, S Cavuoti, K.C Chambers, A Cimatti, C Colodro-Conde, G Congedo, C.J Conselice, L Conversi, Y Copin, A Costille, F Courbin, H.M Courtois, M Cropper, H Degaudenzi, G de Lucia, H Dole, F Dubath, C.A.J Duncan, X Dupac, S Dusini, S Escoffier, M Fabricius, M Farina, R Farinelli, S Ferriol, F Finelli, P Fosalba, S Fotopoulou, M Frailis, E Franceschi, M Fumana, L Gabarra, S Galeotta, K George, B Gillis, C Giocoli, P Gómez-Alvarez, J Gracia-Carpio, A Grazian, F Grupp, S.V.H Haugan, W Holmes, F Hormuth, A Hornstrup, M Huertas-Company, K Jahnke, M Jhabvala, B Joachimi, S Kermiche, A Kiessling, B Kubik, M Kümmel, M Kunz, H Kurki-Suonio, A.M.C Le Brun, S Ligori, P.B Lilje, V Lindholm, I Lloro, M Magliocchetti, G Mainetti, O Mansutti, O Marggraf, M Martinelli, N Martinet, F Marulli, R.J Massey, N Mauri, E Medinaceli, S Mei, M Melchior, M Meneghetti, E Merlin, G Meylan, P Monaco, A Mora, M Moresco, C Moretti, L Moscardini, R Nakajima, C Neissner, R.C Nichol, S.-M Niemi, J.W Nightingale, C Padilla, S Paltani, F Pasian, K Pedersen, W.J Percival, V Pettorino, A Pezzotta, S Pires, G Polenta, M Poncet, L.A Popa, L Pozzetti, F Raison, A Renzi, J Rhodes, G Riccio, I Risso, E Romelli, M Roncarelli, C Rosset, R Saglia, Z Sakr, D Sapone, B Sartoris, P Schneider, A Secroun, E Sihvola, P Simon, C Sirignano, G Sirri, L Stanco, P Tallada-Crespí, A.N Taylor, I Tereno, N Tessore, S Toft, R Toledo-Moreo, F Torradeflot, A Tsyganov, I Tutusaus, E.A Valentijn, J Valiviita, T Vassallo, G. Verdoes Kleijn, A Veropalumbo, Y Wang, J Weller, A Zacchei, G Zamorani, F.M Zerbi, E Zucca, M Ballardini, E Bozzo, C Burigana, R Cabanac, M Calabrese, A Cappi, T Castro, J.A. Escartin Vigo, J García-Bellido, J Macias-Perez, R Maoli, J Martín-Fleitas, R.B Metcalf, M Pöntinen, V Scottez, M Sereno, M Tenti, M Tucci, M Viel, M Wiesmann, Y Akrami, I.T Andika, G Angora, S Anselmi, M Archidiacono, F Atrio-Barandela, L Bazzanini, D Bertacca, M Bethermin, F Beutler, A Blanchard, L Blot, M.L Brown, S Bruton, A Calabro, B. Camacho Quevedo, F Caro, C.S Carvalho, F Cogato, A.R Cooray, O Cucciati, F de Paolis, G Desprez, A Díaz-Sánchez, S Di Domizio, J.M Diego, P.-A Duc, V Duret, M.Y Elkhashab, A Enia, Y Fang, A Finoguenov, A Franco, K Ganga, T Gasparetto, R Gavazzi, E Gaztanaga, F Giacomini, F Gianotti, E.J Gonzalez, G Gozaliasl, A Gruppuso, M Guidi, C.M Gutierrez, A Hall, C Hernández-Monteagudo, H Hildebrandt, J Hjorth, L.K Hunt, J.J.E Kajava, Y Kang, V Kansal, D Karagiannis, K Kiiveri, J Kim, C.C Kirkpatrick, S Kruk, M Lattanzi, M Lembo, F Lepori, G Leroy, J Lesgourgues, T.I Liaudat, S.J Liu, A Loureiro, G Maggio, A Manjón-García, F Mannucci, C.J.A.P Martins, L Maurin, M Miluzio, G Morgante, S Nadathur, K Naidoo, A Navarro-Alsina, S Nesseris, D Paoletti, F Passalacqua, K Paterson, L Patrizii, C Pattison, A Pisani, D Potter, G.W Pratt, S Quai, M Radovich, K Rojas, W Roster, S Sacquegna, M Sahlén, D.B Sanders, E Sarpa, A Schneider, D Sciotti, E Sellentin, F Shankar, J Stadel, K Tanidis, F Tarsitano, G Testera, R Teyssier, S Tosi, A Troja, M Urbano, C Valieri, A Venhola, D Vergani, G Verza, P Vielzeuf, S Vinciguerra, N.A Walton, J.R Weaver, A.H Wright

Wide-field surveys like Euclid mark a new era of extragalactic stellar stream studies. With a large number of streams, it is now possible to constrain the dark matter halos of galaxies in a cosmological volume and draw comparisons to theoretical expectations for the geometry of dark matter halos.…

2026. ⟨hal-05677974⟩

• Article dans une revue

Two years of total column measurements of CO ₂ , CH ₄ and CO in Paris, France

Josselin Doc, François-Marie Bréon, Morgan Lopez, Yao Té, Pascal Jeseck, Jinghui Lian, Guillaume Nief, Antoine Parent, Hippolyte Leuridan, Michel Ramonet

<div xmlns="http://www.tei-c.org/ns/1.0"><p>Several cities have established atmospheric monitoring networks to track greenhouse gas emissions. In the Paris metropolitan area, continuous in-situ surface measurements have been conducted since 2015. To complement them, three…

• Pré-publication, Document de travail

Euclid Quick Data Release (Q1): Dual active galactic nuclei in low-mass galaxies

M Mezcua, B Laloux, M Scialpi, M Siudek, A Eróstegui, F Ricci, T. Matamoro Zatarain, S Visser, H.J.A Rottgering, C.M Gutierrez, A Feltre, L Bisigello, C Saulder, L Ulivi, J.H Knapen, H. Domínguez Sánchez, G Zamorani, K Rubinur, J Calhau, L Spinoglio, F Shankar, D Stern, R Pucha, A Viitanen, B Altieri, S Andreon, N Auricchio, M Baldi, S Bardelli, P Battaglia, A Biviano, M Brescia, S Camera, G Cañas-Herrera, V Capobianco, C Carbone, J Carretero, M Castellano, G Castignani, S Cavuoti, K.C Chambers, A Cimatti, C Colodro-Conde, G Congedo, C.J Conselice, L Conversi, Y Copin, F Courbin, H.M Courtois, M Cropper, H Degaudenzi, G de Lucia, C Dolding, H Dole, F Dubath, X Dupac, M Farina, R Farinelli, F Faustini, S Ferriol, M Frailis, E Franceschi, M Fumana, S Galeotta, K George, B Gillis, C Giocoli, J Gracia-Carpio, A Grazian, F Grupp, S.V.H Haugan, J Hoar, H Hoekstra, W Holmes, I.M Hook, F Hormuth, A Hornstrup, K Jahnke, M Jhabvala, S Kermiche, B Kubik, M Kümmel, M Kunz, H Kurki-Suonio, A.M.C Le Brun, S Ligori, P.B Lilje, V Lindholm, I Lloro, G Mainetti, D Maino, E Maiorano, O Mansutti, O Marggraf, M Martinelli, N Martinet, F Marulli, R.J Massey, E Medinaceli, S Mei, Y Mellier, M Meneghetti, E Merlin, G Meylan, A Mora, M Moresco, L Moscardini, C Neissner, R.C Nichol, S.-M Niemi, C Padilla, S Paltani, F Pasian, K Pedersen, W.J Percival, V Pettorino, S Pires, G Polenta, M Poncet, L.A Popa, L Pozzetti, F Raison, A Renzi, J Rhodes, G Riccio, E Romelli, M Roncarelli, E Rossetti, B Rusholme, R Saglia, Z Sakr, D Sapone, B Sartoris, M Sauvage, M Schirmer, P Schneider, A Secroun, G Seidel, S Serrano, E Sihvola, P Simon, C Sirignano, G Sirri, L Stanco, J Steinwagner, P Tallada-Crespí, A.N Taylor, I Tereno, N Tessore, S Toft, R Toledo-Moreo, F Torradeflot, I Tutusaus, L Valenziano, J Valiviita, T Vassallo, Y Wang, J Weller, A Zacchei, F.M Zerbi, I.A Zinchenko, E Zucca, J García-Bellido, M Huertas-Company, J Macias-Perez, J Martín-Fleitas, V Scottez

Dual active galactic nuclei (AGNs) are expected in hierarchical galaxy evolution models, in which low-mass galaxies merge to build more massive ones. While observational evidence for dual AGNs is growing in massive galaxies, no clear detection has yet been found in the low-mass regime. We used…

2026. ⟨hal-05659454⟩