Year: 2024
Type: preprint
Abstract: We present cosmological parameter forecasts for the Euclid 6x2pt statistics, which include the galaxy clustering and weak lensing main probes together with previously neglected cross-covariance and cross-correlation signals between imaging/photometric and spectroscopic data. The aim is understanding the impact of such terms on the Euclid performance. We produce 6x2pt cosmological forecasts, considering two different techniques: the so-called harmonic and hybrid approaches, respectively. In the first, we treat all the different Euclid probes in the same way, i.e. we consider only angular 2pt-statistics for spectroscopic and photometric clustering, as well as for weak lensing, analysing all their possible cross-covariances and cross-correlations in the spherical harmonic domain. In the second, we do not account for negligible cross-covariances between the 3D and 2D data, but consider the combination of their cross-correlation with the auto-correlation signals. We find that both cross-covariances and cross-correlation signals, have a negligible impact on the cosmological parameter constraints and, therefore, on the Euclid performance. In the case of the hybrid approach, we attribute this result to the effect of the cross-correlation between weak lensing and photometric data, which is dominant with respect to other cross-correlation signals. In the case of the 2D harmonic approach, we attribute this result to two main theoretical limitations of the 2D projected statistics implemented in this work according to the analysis of official Euclid forecasts: the high shot noise and the limited redshift range of the spectroscopic sample, together with the loss of radial information from subleading terms such as redshift-space distortions and lensing magnification. Our analysis suggests that 2D and 3D Euclid data can be safely treated as independent, with a great saving in computational resources.
Authors: Euclid Collaboration, Paganin, L., Bonici, M., Carbone, C., Camera, S., Tutusaus, I., Davini, S., Bel, J., Tosi, S., Sciotti, D., Di Domizio, S., Risso, I., Testera, G., Sapone, D., Sakr, Z., Amara, A., Andreon, S., Auricchio, N., Baccigalupi, C., Baldi, M., Bardelli, S., Battaglia, P., Bender, R., Bernardeau, F., Bodendorf, C., Bonino, D., Branchini, E., Brescia, M., Brinchmann, J., Capobianco, V., Cardone, V. F., Carretero, J., Casas, S., Castellano, M., Castignani, G., Cavuoti, S., Cimatti, A., Colodro-Conde, C., Congedo, G., Conselice, C. J., Conversi, L., Copin, Y., Corcione, L., Costille, A., Courbin, F., Courtois, H. M., Crocce, M., Cropper, M., Da Silva, A., Degaudenzi, H., De Lucia, G., Di Giorgio, A. M., Dinis, J., Dubath, F., Duncan, C. A. J., Dupac, X., Dusini, S., Ealet, A., Farina, M., Farrens, S., Ferriol, S., Frailis, M., Franceschi, E., Galeotta, S., Garilli, B., George, K., Gillard, W., Gillis, B., Giocoli, C., Grazian, A., Grupp, F., Guzzo, L., Haugan, S. V. H., Holmes, W., Hook, I., Hormuth, F., Hornstrup, A., Ilić, S., Jahnke, K., Joachimi, B., Keihänen, E., Kermiche, S., Kiessling, A., Kilbinger, M., Kitching, T., Kubik, B., Kümmel, M., Kunz, M., Kurki-Suonio, H., Ligori, S., Lilje, P. B., Lindholm, V., Lloro, I., Mainetti, G., Maino, D., Maiorano, E., Mansutti, O., Marggraf, O., Markovic, K., Martinelli, M., Martinet, N., Marulli, F., Massey, R., McCracken, H. J., Medinaceli, E., Mei, S., Mellier, Y., Meneghetti, M., Merlin, E., Meylan, G., Moresco, M., Moscardini, L., Munari, E., Niemi, S. -M., Nightingale, J. W., Padilla, C., Paltani, S., Pasian, F., Pedersen, K., Percival, W. J., Pettorino, V., 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., Rossetti, E., Saglia, R., Sartoris, B., Schneider, P., Schrabback, T., Scodeggio, M., Secroun, A., Seidel, G., Serrano, S., Sirignano, C., Sirri, G., Stanco, L., Starck, J. -L., Steinwagner, J., Surace, C., Tallada-Crespí, P., Tavagnacco, D., Taylor, A. N., Tereno, I., Toledo-Moreo, R., Torradeflot, F., Valentijn, E. A., Valenziano, L., Vassallo, T., Veropalumbo, A., Wang, Y., Weller, J., Zacchei, A., Zamorani, G., Zoubian, J., Zucca, E., Biviano, A., Boucaud, A., Bozzo, E., Burigana, C., Calabrese, M., Di Ferdinando, D., Fabbian, G., Farinelli, R., Graciá-Carpio, J., Mauri, N., Scottez, V., Tenti, M., Viel, M., Wiesmann, M., Akrami, Y., Allevato, V., Anselmi, S., Ballardini, M., Blanchard, A., Borgani, S., Bruton, S., Cabanac, R., Calabro, A., Cappi, A., Carvalho, C. S., Castro, T., Cañas-Herrera, G., Chambers, K. C., Contarini, S., Cooray, A. R., Coupon, J., Desprez, G., Dole, H., Díaz-Sánchez, A., Vigo, J. A. Escartin, Escoffier, S., Ferreira, P. G., Ferrero, I., Finelli, F., Fornari, F., Gabarra, L., Ganga, K., García-Bellido, J., Gaztanaga, E., Giacomini, F., Gozaliasl, G., Gregorio, A., Hall, A., Hildebrandt, H., Hjorth, J., Kajava, J. J. E., Kansal, V., Karagiannis, D., Kirkpatrick, C. C., Legrand, L., Loureiro, A., Macias-Perez, J., Maggio, G., Magliocchetti, M., Mannucci, F., Maoli, R., Martins, C. J. A. P., Matthew, S., Maurin, L., Metcalf, R. B., Migliaccio, M., Monaco, P., Morgante, G., Nadathur, S., Patrizii, L., Pezzotta, A., Popa, V., Porciani, C., Potter, D., Pöntinen, M., Rocci, P. -F., Sahlén, M., Schneider, A., Schultheis, M., Sereno, M., Tao, C., Tessore, N., Teyssier, R., Toft, S., Troja, A., Tucci, M., Valieri, C., Valiviita, J., Vergani, D., Verza, G., Vielzeuf, P.
Institutions: Istituto Nazionale di Fisica Nucleare, Sezione di Genova, University of Genoa, National Institute for Astrophysics, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Osservatorio Astrofisico di Torino, University of Turin, University of Geneva, Institut d'Estudis Espacials de Catalunya, Institut de Recherche en Astrophysique et Planétologie, Centre National de la Recherche Scientifique, Université de Toulon, Aix-Marseille Université, Brera Astronomical Observatory, Astronomical Observatory of Rome, Istituto Nazionale di Fisica Nucleare, Sezione di Roma I, Sapienza University of Rome, University of Chile, Saint Joseph University, Heidelberg University, University of Surrey, Osservatorio di Astrofisica e Scienza dello Spazio, Scuola Internazionale Superiore di Studi Avanzati, Trieste Astronomical Observatory, Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Institute for Fundamental Physics of the Universe, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, University of Bologna, Max Planck Institute for Extraterrestrial Physics, Ludwig-Maximilians-Universität München, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Université Paris-Saclay, Institut d'Astrophysique de Paris, Sorbonne Université, Institut de Physique Théorique, Astronomical Observatory of Capodimonte, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, University of Naples Federico II, Universidade do Porto, Institute of Astrophysics and Space Sciences, Centro de Astrofísica da Universidade do Porto, Institute for High Energy Physics, Port d'Informació Científica, Instituto de Astrofísica de Canarias, Royal Observatory, University of Edinburgh, University of Manchester, European Space Agency, European Space Astronomy Centre, European Space Research Institute, Lyon 1 Université, Institut National de Physique Nucléaire et de Physique des Particules, Institut de Physique des 2 Infinis de Lyon, École Polytechnique Fédérale de Lausanne, Institute of Space Sciences, University College London, University of Lisbon, Institute for Space Astrophysics and Planetology, University of Oxford, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Université Paris Cité, Astrophysique, Instrumentation et Modélisation, Centre de physique des particules de Marseille, Osservatorio Astronomico di Padova, University of Milan, Istituto Nazionale di Fisica Nucleare, Sezione di Milano, University of Oslo, Jet Propulsion Laboratory, Lancaster University, von Hoerner & Sulger (Germany), Technical University of Denmark, Centre National d'Études Spatiales, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie, Max Planck Institute for Astronomy, University of Helsinki, Helsinki Institute of Physics, Netherlands Institute for Radio Astronomy, Centre de Calcul de l’Institut National de Physique Nucléaire et de Physique des Particules, University of Bonn, Durham University, European Space Research and Technology Centre, Newcastle University, Aarhus University, University of Waterloo, Perimeter Institute, Agenzia Spaziale Italiana, Institute of Space Science - INFLPR Subsidiary, Universidad de La Laguna, University of Padua, Universität Innsbruck, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Universidad Politécnica de Cartagena, University of Groningen, California Institute of Technology, Infrared Processing and Analysis Center, Istituto di Radioastronomia di Bologna, Osservatorio Astronomico della Regione Autonoma Valle d'Aosta, Regione Autonoma Valle d'Aosta, Flatiron Institute, Cardiff University, JUNIA, Fondazione ICSC Centro Nazionale di Ricerca in High Performance Computing, Big Data e Quantum Computing, Consejo Superior de Investigaciones Científicas, Instituto de Física Teórica, Case Western Reserve University, Université Paris Sciences et Lettres, Observatoire de Paris, Laboratoire Univers et Théories, University of Ferrara, Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara, University of Trieste, University of Minnesota, Université Côte d'Azur, Lagrange Laboratory, Observatoire de la Côte d’Azur, Leiden University, University of Hawaiʻi at Mānoa, University of Hawaii System, University of California, Irvine, Saint Mary's University, Institut d'Astrophysique Spatiale, University of Portsmouth, Aalto University, Ruhr University Bochum, University of Copenhagen, University of Turku, W.M. Keck Observatory, ARC Centre of Excellence for Dark Matter Particle Physics, Swinburne University of Technology, Queen Mary University of London, University of the Western Cape, ICTP South American Institute for Fundamental Research, Universidade Estadual Paulista (Unesp), Stockholm University, Imperial College London, Institut polytechnique de Grenoble, Arcetri Astrophysical Observatory, University of Rome Tor Vergata, University of Zurich, Uppsala University, Princeton University, New York University
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G4235530689, G8800591243
OpenAlex ID: W7128889068
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