Euclid Quick Data Release (Q1)
Tian LiInstitute of Cosmology and Gravitation, University of PortsmouthThomas E. CollettInstitute of Cosmology and Gravitation, University of PortsmouthM. WalmsleyJodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of ManchesterN.E.P. LinesInstitute of Cosmology and Gravitation, University of PortsmouthK. RojasInstitute of Cosmology and Gravitation, University of PortsmouthJ.W NightingaleSchool of Mathematics, Statistics and Physics, Newcastle UniversityW.J.R. EnziInstitute of Cosmology and Gravitation, University of PortsmouthLeonidas A. MoustakasJet Propulsion Laboratory, California Institute of TechnologyColeman KrawczykInstitute of Cosmology and Gravitation, University of PortsmouthR. GavazziSorbonne UniversitéG. DespaliDipartimento di Fisica e Astronomia “Augusto Righi” – Alma Mater Studiorum Università di BolognaPaul H. HollowayDepartment of Physics, Oxford UniversityS. SchuldtINAF-IASF MilanoF. CourbinInstitució Catalana de Recerca i Estudis Avançats (ICREA)R. B. MetcalfINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaDavid BallardSydney Institute for Astronomy, School of Physics, University of SydneyA. VermaDepartment of Physics, Oxford UniversityB. ClémentInstitute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de SauvernyH. DegaudenziDepartment of Astronomy, University of GenevaAndréia Cristina de MeloTechnical University of Munich, TUM School of Natural Sciences, Physics DepartmentJ.A. Acevedo BarrosoInstitute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de SauvernyL. LeuzziDipartimento di Fisica e Astronomia “Augusto Righi” – Alma Mater Studiorum Università di BolognaA. Manjón-GarcíaDepartamento Física Aplicada, Universidad Politécnica de CartagenaR Pearce-CaseySchool of Physical Sciences, The Open UniversityDominique SluseSTAR Institute, University of LiègeC. TortoraINAF-Osservatorio Astronomico di CapodimonteR MasseyGuillaume MahlerDepartment of Physics, Centre for Extragalactic Astronomy, Durham UniversityA. MoreThe Inter-University Centre for Astronomy and AstrophysicsN. AghanimUniversité Paris-Saclay, CNRS, Institut 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. AusselAstrophysique, Instrumentation et ModélisationC. BaccigalupiIFPU, Institute for Fundamental Physics of the UniverseM. BaldiUniversity of BolognaA. BalestraINAF-Osservatorio Astronomico di PadovaS BardelliINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaPietro BattagliaINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaR. BenderMax Planck Institute for Extraterrestrial PhysicsF. BernardeauUniversité Paris-SaclayA. BivianoIFPU, Institute for Fundamental Physics of the UniverseA. BonchiSpace Science Data Center, Italian Space AgencyE. BranchiniINFN-Sezione di GenovaM. 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-HerreraLeiden Observatory, Leiden UniversityV. CapobiancoINAF-Osservatorio Astrofisico di TorinoC. CarboneINAF-IASF MilanoV.F CardoneINFN-Sezione di RomaJ. CarreteroCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT)S. CasasInstitute for Theoretical Particle Physics and Cosmology (TTK), RWTH Aachen UniversityM. G. CastellanoINAF-Osservatorio Astronomico di RomaG. CastignaniINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaS CavuotiINAF-Osservatorio Astronomico di CapodimonteK. 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. CongedoInstitute for Astronomy, University of Edinburgh, Royal ObservatoryC.J. ConseliceJodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of ManchesterL. ConversiESAC/ESAY. CopinCentre National de la Recherche ScientifiqueH. M. CourtoisLyon CollegeM. CropperMullard Space Science Laboratory, University College LondonA. Da SilvaInstituto de Astrofísica e Ciências do Espaço, Faculdade de Ciências, Universidade de LisboaG. De LuciaINAF-Osservatorio Astronomico di TriesteA. M. Di GiorgioINAF-Istituto di Astrofisica e Planetologia SpazialiC. DoldingMullard Space Science Laboratory, University College LondonH. DoleInstitut d'Astrophysique SpatialeF DubathDepartment of Astronomy, University of GenevaC. A. J. DuncanJodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of ManchesterX. DupacESAC/ESAS. EscoffierAix-Marseille Université, CNRS/IN2P3, CPPMM. FabriciusMax Planck Institute for Extraterrestrial PhysicsM. FarinaINAF-Istituto di Astrofisica e Planetologia SpazialiR. FarinelliINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaF. FaustiniINAF-Osservatorio Astronomico di RomaS. FerriolUniversité Claude Bernard Lyon 1, CNRS/IN2P3, IP2I Lyon, UMR 5822F. Finelli⋆INAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaS. FotopoulouSchool of Physics, HH Wills Physics Laboratory, University of BristolM. FrailisINAF-Osservatorio Astronomico di TriesteE. FranceschiINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaS. GaleottaINAF-Osservatorio Astronomico di TriesteKoshy GeorgeUniversitäts-Sternwarte München, Fakultät für Physik, Ludwig-Maximilians-Universität MünchenW GillardAix-Marseille Université, CNRS/IN2P3, CPPMB GillisUniversity of EdinburghC. GiocoliINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaP. Gómez-AlvarezFRACTAL S.L.N.EJ. Gracia-CarpioMax Planck Institute for Extraterrestrial PhysicsB. R. GranettINAF-Osservatorio Astronomico di BreraA. GrazianINAF-Osservatorio Astronomico di PadovaF. GruppUniversitäts-Sternwarte München, Fakultät für Physik, Ludwig-Maximilians-Universität MünchenS. V. H. HauganInstitute of Theoretical Astrophysics, University of OsloH. HoekstraLeiden Observatory, Leiden UniversityW. HolmesJet Propulsion Laboratory, California Institute of TechnologyI. HookDepartment of Physics, Lancaster UniversityF. HormuthFelix Hormuth EngineeringA. HornstrupCosmic Dawn Center (DAWN)
2025en
ABI
Annotatsiya
Strong gravitational-lensing systems with multiple source planes are powerful tools for probing the density profiles and dark matter substructure of galaxies. The ratio of the Einstein radii is related to the dark energy equation of state through the cosmological scaling factor β . Galaxy-scale double-source-plane lenses (DSPLs) are extremely rare, however. We report the discovery of four new galaxy-scale DSPL candidates in the Euclid Quick Release 1 (Q1) data. These systems were initially identified through a combination of machine-learning lens-finding models and subsequent visual inspection from citizens and experts. We applied the widel -used LensPop lens-forecasting model to predict that the full Euclid survey will discover 1700 DSPLs. This scales to 6 ± 3 DSPLs in 63 deg 2 , which is the area of Q1. The number of discoveries in this work is broadly consistent with this forecast. We present lens models for each DSPL and infer their β values. Our initial Q1 sample demonstrates that Euclid promises to discover these rare objects.
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