Year: 2024
Type: article
Abstract: Verifying the fully kinematic nature of the long-known cosmic microwave background (CMB) dipole is of fundamental importance in cosmology. In the standard cosmological model with the Friedman–Lemaitre–Robertson–Walker (FLRW) metric from the inflationary expansion, the CMB dipole should be entirely kinematic. Any non-kinematic CMB dipole component would thus reflect the preinflationary structure of space-time probing the extent of the FLRW applicability. Cosmic backgrounds from galaxies after the matter-radiation decoupling should have a kinematic dipole component identical in velocity to the CMB kinematic dipole. Comparing the two can lead to isolating the CMB non-kinematic dipole. It was recently proposed that such a measurement can be done using the near-infrared cosmic infrared background (CIB) measured with the currently operating Euclid telescope, and later with Roman. The proposed method reconstructs the resolved CIB, the integrated galaxy light (IGL), from Euclid’s Wide Survey and probes its dipole with a kinematic component amplified over that of the CMB by the Compton–Getting effect. The amplification coupled with the extensive galaxy samples forming the IGL would determine the CIB dipole with an overwhelming signal-to-noise ratio, isolating its direction to sub-degree accuracy. We developed details of the method for Euclid’s Wide Survey in four bands spanning from 0.6 to 2 μm. We isolated the systematic and other uncertainties and present methodologies to minimize them, after confining the sample to the magnitude range with a negligible IGL–CIB dipole from galaxy clustering. These include the required star–galaxy separation, accounting for the extinction correction dipole using the new method developed here achieving total separation, and accounting for the Earth’s orbital motion and other systematic effects. Finally, we applied the developed methodology to the simulated Euclid galaxy catalogs, successfully testing the upcoming applications. With the techniques presented, one would indeed measure the IGL–CIB dipole from Euclid’s Wide Survey with high precision, probing the non-kinematic CMB dipole.
Authors: Y. Copin, L. Corcione, F. Courbin, H. M. Courtois, A. Da Silva, H. Degaudenzi, A. M. Di Giorgio, J. Dinis, F. Dubath, X. Dupac, S. Dusini, A. Ealet, M. Farina, S. Farrens, S. Ferriol, M. Frailis, E. Franceschi, S. Galeotta, B. Gillis, C. Giocoli, A. Grazian, F. Grupp, S. V. H. Haugan, I. Hook, F. Hormuth, A. Hornstrup, K. Jahnke, E. Keihänen, S. Kermiche, A. Kiessling, M. Kilbinger, B. Kubik, M. Kunz, H. Kurki-Suonio, S. Ligori, P. B. Lilje, V. Lindholm, I. Lloro, D. Maino, E. Maiorano, O. Mansutti, O. Marggraf, K. Markovic, N. Martinet, F. Marulli, R. Massey, S. Maurogordato, H. J. McCracken, E. Medinaceli, S. Mei, Y. Mellier, M. Meneghetti, G. Meylan, M. Moresco, L. Moscardini, E. Munari, S.-M. Niemi, C. Padilla, S. Paltani, F. Pasian, K. Pedersen, W. J. Percival, S. Pires, G. Polenta, M. Poncet, L. A. Popa, F. Raison, A. Renzi, J. Rhodes, G. Riccio, E. Romelli, M. Roncarelli, E. Rossetti, R. Saglia, D. Sapone, B. Sartoris, M. Schirmer, P. Schneider, T. Schrabback, A. Secroun, G. Seidel, M. Seiffert, S. Serrano, C. Sirignano, G. Sirri, L. Stanco, C. Surace, P. Tallada-Crespí, A. N. Taylor, H. I. Teplitz, I. Tereno, R. Toledo-Moreo, F. Torradeflot, I. Tutusaus, L. Valenziano, T. Vassallo, A. Veropalumbo, Y. Wang, G. Zamorani, J. Zoubian, E. Zucca, A. Biviano, E. Bozzo, C. Burigana, C. Colodro-Conde, D. Di Ferdinando, G. Fabbian, R. Farinelli, J. Graciá-Carpio, G. Mainetti, M. Martinelli, N. Mauri, C. Neissner, Z. Sakr, V. Scottez, M. Tenti, M. Viel, M. Wiesmann, Y. Akrami, V. Allevato, S. Anselmi, C. Baccigalupi, M. Ballardini, A. Blanchard, S. Borgani, A. S. Borlaff, S. Bruton, R. Cabanac, A. Cappi, C. S. Carvalho, G. Castignani, T. Castro, G. Cañas-Herrera, K. C. Chambers, S. Contarini, J. Coupon, G. De Lucia, G. Desprez, S. Di Domizio, H. Dole, A. Díaz-Sánchez, J. A. Escartin Vigo, I. Ferrero, F. Finelli, L. Gabarra, J. García-Bellido, V. Gautard, E. Gaztanaga, K. George, F. Giacomini, G. Gozaliasl, A. Gregorio, A. Hall, H. Hildebrandt, J. J. E. Kajava, V. Kansal, C. C. Kirkpatrick, L. Legrand, A. Loureiro, M. Magliocchetti, F. Mannucci, R. Maoli, C. J. A. P. Martins, S. Matthew, L. Maurin, R. B. Metcalf, M. Migliaccio, P. Monaco, G. Morgante, S. Nadathur, Nicholas A. Walton, L. Patrizii, V. Popa, D. Potter, M. Pöntinen, P.-F. Rocci, M. Sahlén, A. Schneider, E. Sefusatti, M. Sereno, J. Steinwagner, G. Testera, R. Teyssier, S. Toft, S. Tosi, A. Troja, M. Tucci, J. Valiviita, D. Vergani, G. Verza, G. Hasinger
Institutions: University of Helsinki, Centre National de la Recherche Scientifique, Université Paris Cité, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Université Paris-Saclay, Astrophysique, Instrumentation et Modélisation, Trieste Astronomical Observatory, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, Osservatorio Astronomico di Padova, University of Oslo, Lancaster University, von Hoerner & Sulger (Germany), Technical University of Denmark, Max Planck Institute for Astronomy, Helsinki Institute of Physics, Aix-Marseille Université, Centre de physique des particules de Marseille, Institut National de Physique Nucléaire et de Physique des Particules, Jet Propulsion Laboratory, University of Geneva, Netherlands Institute for Radio Astronomy, University of Milan, Istituto Nazionale di Fisica Nucleare, Sezione di Milano, University of Bonn, University of Bologna, Durham University, Université Côte d'Azur, Observatoire de la Côte d’Azur, Institut d'Astrophysique de Paris, Laboratoire AstroParticule et Cosmologie, European Space Research and Technology Centre, Aarhus University, University of Padua, University of Waterloo, Perimeter Institute, Universität Innsbruck, Centre National d'Études Spatiales, Agenzia Spaziale Italiana, Lagrange Laboratory
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Aeronautics and Space Administration, European Space Agency, Magyar Tudományos Akadémia, Agenzia Spaziale Italiana, National Astronomical Observatory of Japan, Agenția Spațială Română, Junta de Castilla y León, Norsk Romsenter, Institut de Física d'Altes Energies, Goddard Space Flight Center, Fundação para a Ciência e a Tecnologia, European Regional Development Fund, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Agencia Estatal de Investigación, Integrated Electronics Engineering Center, Binghamton University
OpenAlex ID: W6959555639
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