Euclid preparation. XCVI. Cosmology Likelihood for Observables in Euclid (CLOE). 3. Inference and Forecasts
Year: 2025
Type: preprint
Abstract: The Euclid mission aims to measure the positions, shapes, and redshifts of over a billion galaxies to provide unprecedented constraints on the nature of dark matter and dark energy. Achieving this goal requires a continuous reassessment of the mission's scientific performance, particularly in terms of its ability to constrain cosmological parameters, as our understanding of how to model large-scale structure observables improves. In this study, we present the first scientific forecasts using CLOE (Cosmology Likelihood for Observables in Euclid), a dedicated Euclid cosmological pipeline developed to support this endeavour. Using advanced Bayesian inference techniques applied to synthetic Euclid-like data, we sample the posterior distribution of cosmological and nuisance parameters across a variety of cosmological models and Euclid primary probes: cosmic shear, angular photometric galaxy clustering, galaxy-galaxy lensing, and spectroscopic galaxy clustering. We validate the capability of CLOE to produce reliable cosmological forecasts, showcasing Euclid's potential to achieve a figure of merit for the dark energy parameters $w_0$ and $w_a$ exceeding 400 when combining all primary probes. Furthermore, we illustrate the behaviour of the posterior probability distribution of the parameters of interest given different priors and scale cuts. Finally, we emphasise the importance of addressing computational challenges, proposing further exploration of innovative data science techniques to efficiently navigate the Euclid high-dimensional parameter space in upcoming cosmological data releases.
Source: arXiv (Cornell University)
Authors: Euclid Collaboration, Cañas-Herrera, G., Goh, L. W. K., Blot, L., Bonici, M., Camera, S., Cardone, V. F., Carrilho, P., Casas, S., Davini, S., Di Domizio, S., Farrens, S., Beauchamps, S. Gouyou, Ilić, S., Joudaki, S., Keil, F., Brun, A. M. C. Le, Martinelli, M., Moretti, C., Pettorino, V., Pezzotta, A., Sakr, Z., Sánchez, A. G., Sciotti, D., Tanidis, K., Tutusaus, I., Ajani, V., Crocce, M., Fumagalli, A., Giocoli, C., Legrand, L., Lembo, M., Lesci, G. F., Girones, D. Navarro, Nouri-Zonoz, A., Pamuk, S., Pourtsidou, A., Tsedrik, M., Bel, J., Carbone, C., Gonzalez, J. Claramunt, Duncan, C. A. J., Kilbinger, M., Porredon, A., Sapone, D., Sellentin, E., Taylor, P. L., Tessore, N., Altieri, B., Amara, A., Amendola, L., Andreon, S., Auricchio, N., Baccigalupi, C., Baldi, M., Bardelli, S., Bender, R., Biviano, A., Bonino, D., Branchini, E., Brescia, M., Brinchmann, J., Capobianco, V., Carretero, J., Castellano, M., Castignani, G., Cavuoti, S., Chambers, K. C., Cimatti, A., Colodro-Conde, C., Congedo, G., Conselice, C. J., Conversi, L., Copin, Y., Courbin, F., Courtois, H. M., Cropper, M., Da Silva, A., Degaudenzi, H., de la Torre, S., De Lucia, G., Di Giorgio, A. M., Dole, H., Dubath, F., Dupac, X., Dusini, S., Escoffier, S., Farina, M., Faustini, F., Ferriol, S., Finelli, F., Fosalba, P., Fotopoulou, S., Fourmanoit, N., Frailis, M., Franceschi, E., Galeotta, S., George, K., Gillard, W., Gillis, B., Gómez-Alvarez, P., Gracia-Carpio, J., Granett, B. R., Grazian, A., Grupp, F., Guzzo, L., Haugan, S. V. H., Hoekstra, H., Holmes, W., Hook, I., Hormuth, F., Hornstrup, A., Hudelot, P., Jahnke, K., Jhabvala, M., Joachimi, B., Keihänen, E., Kermiche, S., Kiessling, A., Kubik, B., Kuijken, K., Kümmel, M., Kunz, M., Kurki-Suonio, H., Lahav, O., Laureijs, R., Ligori, S., Lilje, P. B., Lindholm, V., Lloro, I., Mainetti, G., Maino, D., Maiorano, E., Mansutti, O., Marcin, S., Marggraf, O., Markovic, K., Martinet, N., Marulli, F., Massey, R., McCracken, H. J., Medinaceli, E., Melchior, M., Mellier, Y., Meneghetti, M., Merlin, E., Meylan, G., Mora, A., Moresco, M., Moscardini, L., Neissner, C., Niemi, S. -M., Nightingale, J. W., Padilla, C., Paltani, S., Pasian, F., Pedersen, K., Percival, W. J., Pires, S., Polenta, G., Poncet, M., Popa, L. A., Pozzetti, L., Raison, F., Rebolo, R., Renzi, A., Rhodes, J., Riccio, G., Romelli, E., Roncarelli, M., Saglia, R., Sartoris, B., Schewtschenko, J. A., Schneider, P., Schrabback, T., Secroun, A., Sefusatti, E., Seidel, G., Seiffert, M., Serrano, S., Simon, P., Sirignano, C., Sirri, G., Mancini, A. Spurio, Stanco, L., Steinwagner, J., Tallada-Crespí, P., Tavagnacco, D., Taylor, A. N., Tereno, I., Toft, S., Toledo-Moreo, R., Torradeflot, F., Valenziano, L., Valiviita, J., Vassallo, T., Kleijn, G. Verdoes, Veropalumbo, A., Wang, Y., Weller, J., Zamorani, G., Zerbi, F. M., Zucca, E., Ballardini, M., Bolzonella, M., Boucaud, A., Bozzo, E., Burigana, C., Cabanac, R., Calabrese, M., Casenove, P., Di Ferdinando, D., Vigo, J. A. Escartin, Gabarra, L., Matthew, S., Mauri, N., Metcalf, R. B., Pöntinen, M., Porciani, C., Scottez, V., Tenti, M., Viel, M., Wiesmann, M., Akrami, Y., Alvi, S., Andika, I. T., Angulo, R. E., Anselmi, S., Archidiacono, M., Atrio-Barandela, F., Balaguera-Antolinez, A., Bethermin, M., Blanchard, A., Borgani, S., Brown, M. L., Bruton, S., Calabro, A., Quevedo, B. Camacho, Cappi, A., Caro, F., Carvalho, C. S., Castro, T., Cogato, F., Conseil, S., Contarini, S., Cooray, A. R., Cucciati, O., De Paolis, F., Desprez, G., Díaz-Sánchez, A., Diego, J. M., Dimauro, P., Enia, A., Fang, Y., Ferrari, A. G., Ferreira, P. G., Finoguenov, A., Franco, A., Ganga, K., García-Bellido, J., Gasparetto, T., Gautard, V., Gavazzi, R., Gaztanaga, E., Giacomini, F., Gozaliasl, G., Guidi, M., Gutierrez, C. M., Hall, A., Hemmati, S., Hernández-Monteagudo, C., Hildebrandt, H., Hjorth, J., Kajava, J. J. E., Kang, Y., Kansal, V., Karagiannis, D., Kiiveri, K., Kirkpatrick, C. C., Kruk, S., Lacasa, F., Lattanzi, M., Graet, J. Le, Lepori, F., Leroy, G., Lesgourgues, J., Leuzzi, L., Liaudat, T. I., Liu, S. J., Loureiro, A., Macias-Perez, J., Maggio, G., Magliocchetti, M., Mannucci, F., Maoli, R., Martín-Fleitas, J., Martins, C. J. A. P., Maurin, L., Migliaccio, M., Miluzio, M., Monaco, P., Montoro, A., Morgante, G., Murray, C., Nadathur, S., Naidoo, K., Navarro-Alsina, A., Nesseris, S., Pagano, L., Passalacqua, F., Paterson, K., Patrizii, L., Pisani, A., Potter, D., Quai, S., Radovich, M., Reimberg, P., Risso, I., Rodighiero, G., Sacquegna, S., Sahlén, M., Sarpa, E., Schaye, J., Schneider, A., Sereno, M., Silvestri, A., Smith, L. C., Stadel, J., Tao, C., Testera, G., Teyssier, R., Tosi, S., Troja, A., Tucci, M., Valieri, C., Venhola, A., Vergani, D., Vernizzi, F., Verza, G., Walton, N. A.
Institutions: European Space Agency, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA Paris-Saclay - Etablissement de Saclay, Astrophysique, Instrumentation et Modélisation, CEA Paris-Saclay, Laboratoire Univers et Théories, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie, Institut de Recherche en Astrophysique et Planétologie, Centre de Physique Théorique, Institut de Physique des 2 Infinis de Lyon, Laboratoire d’Astrophysique de Marseille, Institut d'Astrophysique Spatiale, Centre de physique des particules de Marseille, Institut d'Astrophysique de Paris, Institut National de Physique Nucléaire et de Physique des Particules, Centre de Calcul de l’Institut National de Physique Nucléaire et de Physique des Particules, Centre National d'Études Spatiales, Université Paris Diderot, Université de Lille, Observatoire astronomique de Strasbourg, Direction de la Recherche Fondamentale, Institut de Recherche sur les Lois Fondamentales de l'Univers, Laboratoire de Physique Subatomique et de Cosmologie, Centre National de la Recherche Scientifique, Institut de Physique Théorique
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4416018276
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