Euclid Quick Data Release (Q1)
M. WalmsleyDavid A. Dunlap Department of Astronomy & Astrophysics, University of TorontoP. HollowayDepartment of Physics, Oxford UniversityN. E. P. LinesInstitute of Cosmology and Gravitation, University of PortsmouthK. RojasInstitute of Cosmology and Gravitation, University of PortsmouthT. E. CollettInstitute of Cosmology and Gravitation, University of PortsmouthA. VermaDepartment of Physics, Oxford UniversityT. LiInstitute of Cosmology and Gravitation, University of PortsmouthJ. W. NightingaleSchool of Mathematics, Statistics and Physics, Newcastle UniversityG. DespaliINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaS. SchuldtDipartimento di Fisica “Aldo Pontremoli”, Università degli Studi di MilanoR. GavazziInstitut d’Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne UniversitéA. MeloMax-Planck-Institut für AstrophysikR. B. MetcalfINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaI. T. AndikaMax-Planck-Institut für AstrophysikL. LeuzziINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaA. Manjón-GarcíaDepartamento Física Aplicada, Universidad Politécnica de CartagenaR. Pearce-CaseySchool of Physical Sciences, The Open UniversityS. H. VinckenUniversity of Applied Sciences and Arts of Northwestern Switzerland, School of EngineeringJ. WildeInstitut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (IEEC-UB)V. BusilloINFN section of NaplesC. TortoraINAF-Osservatorio Astronomico di CapodimonteJ. A. Acevedo BarrosoInstitute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de SauvernyH. DoleUniversité Paris-Saclay, CNRS, Institut d’astrophysique spatialeL. R. EckerUniversitäts-Sternwarte München, Fakultät für Physik, Ludwig-Maximilians-Universität MünchenJ. PearsonSchool of Physical Sciences, The Open UniversityP. J. MarshallSLAC National Accelerator LaboratoryA. MoreThe Inter-University Centre for Astronomy and AstrophysicsT. SaifollahiUniversité de Strasbourg, CNRS, Observatoire astronomique de Strasbourg, UMR 7550J. Gracia-CarpioMax Planck Institute for Extraterrestrial PhysicsE. BaetenCitizen Scientist, Zooniverse c/o University of OxfordC. CornenCitizen Scientist, Zooniverse c/o University of OxfordL. C. JohnsonC. MacmillanDepartment of Physics, Oxford UniversityS. KrukESAC/ESAK. A. RemmelgasESAC/ESAB. ClémentInstitute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de SauvernyH. DegaudenziDepartment of Astronomy, University of GenevaF. CourbinInstitut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (IEEC-UB)J. BovyDavid A. Dunlap Department of Astronomy & Astrophysics, University of TorontoS. CasasInstitute for Theoretical Particle Physics and Cosmology (TTK), RWTH Aachen UniversityH. DannerbauerInstituto de Astrofísica de Canarias (IAC); Departamento de Astrofísica, Universidad de La Laguna (ULL)J. M. DiegoInstituto de Física de CantabriaK. FinnerA. GalanTechnical University of Munich, TUM School of Natural Sciences, Physics DepartmentC. GiocoliINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaN. B. HoggLaboratoire univers et particules de Montpellier, Université de Montpellier, CNRSK. JahnkeMax-Planck-Institut für AstronomieJ. KatonaELTE Eötvös Loránd University, Institute of Physics and AstronomyA. KovácsKonkoly Observatory, HUN-REN CSFK, MTA Centre of ExcellenceC. De LeoDipartimento di Fisica, Sapienza Università di RomaG. MahlerDepartment of Physics, Institute for Computational Cosmology, Durham UniversityM. MillonInstitute for Particle Physics and Astrophysics, Dept. of Physics, ETH ZurichB. C. NagamAstronomical Institute of the Slovak Academy of SciencesP. NugentLawrence Berkeley National LaboratoryA. Sainz de MurietaInstitute of Cosmology and Gravitation, University of PortsmouthC. M. O'RiordanMax-Planck-Institut für AstrophysikD. SluseSTAR Institute, University of Liège, Quartier AgoraA. SonnenfeldDepartment of Astronomy, School of Physics and Astronomy, Shanghai Jiao Tong UniversityC. SpinielloDepartment of Physics, Oxford UniversityS. SerjeantSchool of Physical Sciences, The Open UniversityT. T. ThaiNational Astronomical Observatory of JapanL. UliviDipartimento di Fisica e Astronomia, Università di FirenzeG. L. WalthL. WeisenbachInstitute of Cosmology and Gravitation, University of PortsmouthM. ZumalacarreguiMax Planck Institute for Gravitational Physics (Albert Einstein Institute)N. AghanimInstitut d'Astrophysique SpatialeB. AltieriESAC/ESAA. AmaraSchool of Mathematics and Physics, University of SurreyS. AndreonINAF-Osservatorio Astronomico di BreraN. AuricchioINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaH. AusselUniversité Paris CitéC. BaccigalupiSISSA, International School for Advanced StudiesM. BaldiUniversity of BolognaA. BalestraINAF-Osservatorio Astronomico di PadovaS. BardelliINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaP. BattagliaINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaF. BernardeauInstitut d'Astrophysique de ParisA. BivianoINAF-Osservatorio Astronomico di TriesteA. BonchiSpace Science Data Center, Italian Space AgencyD. BoninoINAF-Osservatorio Astrofisico di TorinoE. BranchiniINAF-Osservatorio Astronomico di BreraM. BresciaINAF-Osservatorio Astronomico di CapodimonteJ. BrinchmannInstituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUPS. CameraDipartimento di Fisica, Università degli Studi di TorinoG. Cañas-HerreraEuropean Space Agency/ESTECV. CapobiancoINAF-Osservatorio Astrofisico di TorinoC. CarboneINAF-IASF MilanoV. F. CardoneINAF-Osservatorio Astronomico di RomaJ. CarreteroPort d’Informació Científica, Campus UABF. J. CastanderInstitute of Space Sciences (ICE, CSIC), Campus UABM. CastellanoINAF-Osservatorio Astronomico di RomaG. CastignaniINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaS. CavuotiINFN section of NaplesK. C. ChambersInstitute for Astronomy, University of HawaiiA. CimattiDipartimento di Fisica e Astronomia “Augusto Righi” – Alma Mater Studiorum Università di BolognaC. Colodro-CondeInstituto de Astrofísica de CanariasG. CongedoUniversity of EdinburghC. J. ConseliceJodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of ManchesterL. ConversiEuropean Space Agency/ESRINY. CopinCentre National de la Recherche Scientifique
2026en
ABI
Annotatsiya
We present a catalogue of 497 galaxy-galaxy strong lenses in the Euclid Quick Release 1 data (63 deg 2 ). In the initial 0.45% of Euclid ’s surveys, we double the total number of known lens candidates with space-based imaging. Our catalogue includes 250 grade A candidates, the vast majority of which (243) were previously unpublished. Euclid ’s resolution reveals rare lens configurations of scientific value, including double-source-plane lenses, edge-on lenses, complete Einstein rings, and quadruply imaged lenses. We resolve lenses with small Einstein radii ( θ E < 1″) in large numbers for the first time. These lenses were found through an initial sweep by deep learning models followed by Space Warps citizen scientist inspection, expert vetting, and system-by-system modelling. Our search approach scales straightforwardly to Euclid Data Release 1 and, without changes, would yield approximately 7000 high-confidence (grade A or B) lens candidates by late 2026. Further extrapolating to the complete Euclid Wide Survey implies a likely yield of over 100 000 high-confidence candidates, transforming strong lensing science.
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