2026
conference-abstract
LiteBIRD mission overview after mission reformation
K Aizawa, H Akamatsu, R Akizawa, E Allys, A Anand, D Audley, J Aumont, S Azzoni, C Baccigalupi, M Ballardini, A.J Banday, G. Barbieri Ripamonti, R.B Barreiro, N Bartolo, S Basak, M Bersanelli, A Besnard, D Blinov, F Bouchet, F Boulanger, N Brancadori, T Brinckmann, E Calabrese, P Campeti, A Carones, F Carralot, F.J Casas, J Chandran, Y Chinone, M Citran, F Columbro, A Coppolecchia, F Cuttaia, P Dal Bo, P de Bernardis, T de Haan, E de la Hoz, M de Lucia, M de Petris, S Della Torre, C Dickinson, P Diego-Palazuelos, J. J. Díaz García, T Dotani, M Douspis, K Ebisawa, H.K Eriksen, J Errard, E Ferreira, F Finelli, C Franceschet, R Fujimoto, U Fuskeland, G Galloni, M Galloway, M Gerbino, M Gervasi, R.T Génova-Santos, T Ghigna, S Giardiello, E Gjerløw, M Gomes, A Gruppuso, J.E Gudmundsson, P Hargrave, S.E Harper, M Hasegawa, M Hazumi, S Henrot-Versillé, L.T Hergt, E Hivon, K Ichiki, K Ikuma, T.L Irikura, H Ishino, B Jost, R Keskitalo, K Kikuno, K Kohri, E Komatsu, L Lamagna, M Lattanzi, C Leloup, M Lembo, F Levrier, J Liu, A.I Lonappan, M López-Caniego, G Luzzi, J Macias-Perez, A Maeda, B Maffei, D Maino, V Maranchery, E Martínez-González, S Masi, S Matarrese, F. Matsuda, T Matsumura, S Micheli, M Migliaccio, M Monelli, L Montier, L Mousset, S Myozen, Y Nagano, R Nagata, K Nagayoshi, M Najafi, T Namikawa, P Natoli, F Noviello, A Occhiuzzi, K Odagiri, S Oguri, H Ohsaki, S Okumura, L Pagano, A Paiella, D Paoletti, S Paradiso, G Pascual-Cisneros, G Patanchon, V Pavlidou, F Piacentini, M Piat, G Piccirilli, M Pinchera, G Pisano, G Polenta, L Porcelli, F.S Porter, M Reinecke, M Remazeilles, A Rizzieri, J.A Rubiño-Martín, M Ruiz-Granda, Y Sakurai, L Salvati, J Sanghavi, G Savini, D Scott, Y Sekimoto, M Shiraishi, G Signorelli, S Stellati, R Stompor, R.M Sullivan, R Takahashi, R Takaku, H Takakura, Y Takase, A Tartari, K Tassis, K Tateoka, L Terenzi, M Tomasi, M Tristram, M Tsujimoto, D Vaccaro, L Vacher, B van Tent, P Vielva, S Vinzl, K Watanuki, D.J Watts, I K.Wehus, G Weymann-Despres, B Winter, E.J Wollack, N.Y Yamasaki, K Yoshihara, A Zacchei, M Zannoni
0Citations signalées — pas une note de qualité
77Institutions déclarées
15Pays d’affiliation déclarés
Résumé fourni par la source
LiteBIRD is a JAXA-led space mission designed to produce all-sky microwave polarization maps. Its primary science goal is to test representative inflationary models by measuring the cosmic microwave background B-mode polarization generated by primordial gravitational waves, while also providing new insights into cosmology, particle physics, and astrophysics. The mission concept has been updated following the reformation activities initiated after the Mission Definition Review in 2024. The current concept preserves the central scientific objectives, while simplifying the payload configuration: a single telescope covers 12 frequency bands with band centers spanning 40 to 402 GHz, corresponding to an optical coverage of 34–448 GHz. The telescope is a cross-Dragone reflector with a 500-mm aperture diameter, cooled to approximately 5K and coupled to transition-edge-sensor bolometer arrays operated at 0.1 K. LiteBIRD will observe from a Lissajous orbit around the Sun–Earth L2 point during a nominal 3-year survey. More specifically, the primary scientific objective is to achieve total uncertainty in the tensor-to-scalar ratio of δr < 0.002 (68% C.L.), including contributions from foreground residuals, statistical uncertainties, instrumental systematics, and margin contingency. The corresponding map-noise requirements are specified separately for the low-, mid-, and high-frequency ranges over the reionization and recombination multipole ranges. This sensitivity makes LiteBIRD unique not only for inflationary science but also for a broad range of scientific investigations probing the history of both the early and late Universe, as well as for astrophysical processes, including Galactic science. This paper summarizes the scientific objectives, updated payload and instrument concepts, observation strategy, and ground segment plans.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- LiteBIRD mission overview after mission reformation
- Date Crossref
- 21/08/2026
- Éditeur
- SPIE
- Type
- proceedings-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude et ne compte pas comme une seconde source scientifique indépendante.
Institutions déclarées
The University of TokyoHigh Energy Accelerator Research OrganizationCentre National de la Recherche ScientifiqueÉcole Normale Supérieure - PSLSorbonne UniversitéÉcole Normale SupérieureUniversity of Rome Tor VergataSpace Research Organisation NetherlandsCentre National d'Études SpatialesInstitut de Recherche en Astrophysique et PlanétologiePrinceton UniversityScuola Internazionale Superiore di Studi AvanzatiUniversity of TriesteIstituto Nazionale di Fisica Nucleare, Sezione di TriesteInstitute for Fundamental Physics of the UniverseUniversity of FerraraIstituto Nazionale di Fisica Nucleare, Sezione di FerraraNational Institute for AstrophysicsSapienza University of RomeInstituto de Física de CantabriaUniversity of PaduaIstituto Nazionale di Fisica Nucleare, Sezione di PadovaOsservatorio Astronomico di PadovaIndian Institute of Science Education and Research ThiruvananthapuramUniversity of MilanIstituto Nazionale di Fisica Nucleare, Sezione di MilanoUniversité Paris-SaclayInstitut d'Astrophysique SpatialeUniversity of CreteFoundation for Research and Technology HellasInstitut d'Astrophysique de ParisCardiff UniversityExcellence Cluster OriginsMax Planck Institute for AstrophysicsUniversity of TrentoUniversité Paris CitéLaboratoire AstroParticule et CosmologieIstituto Nazionale di Fisica Nucleare, Sezione di Roma IIstituto Nazionale di Fisica Nucleare, Sezione di PisaGoddard Space Flight CenterIstituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaUniversity of ManchesterInstituto de Astrofísica de CanariasThe Graduate University for Advanced Studies, SOKENDAIJapan Aerospace Exploration AgencyUniversity of OsloIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of Milano-BicoccaUniversidad de La LagunaStockholm UniversityNational Central UniversityCentre Pour La Recherche Economique et ses ApplicationsNagoya UniversityOkayama UniversityLawrence Berkeley National LaboratoryUniversity of California, BerkeleySuwa Red Cross HospitalUniversity of California San DiegoEuropean Space Astronomy CentreUniversidad Europea de MadridAgenzia Spaziale ItalianaInstitut polytechnique de GrenobleUniversité Grenoble AlpesTohoku UniversityIstituto Nazionale di Fisica NucleareIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiUniversity of OxfordUniversidad de CantabriaLudwig-Maximilians-Universität MünchenUniversity of AmsterdamThe London CollegeUniversity College LondonUniversity of British ColumbiaOnomichi City UniversityNTT (Japan)NTT Medical CenterTrieste Astronomical Observatory Une affiliation ne permet pas de déduire la nationalité d’un auteur.