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Accès ouvert déclaré 2026 article

Directional search for persistent gravitational waves: Results from the first part of LIGO-Virgo-KAGRA’s fourth observing run

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245Institutions déclarées
31Pays d’affiliation déclarés

Résumé fourni par la source

The angular distribution of gravitational-wave power from persistent sources may exhibit anisotropies arising from the large-scale structure of the Universe. This motivates directional searches for astrophysical and cosmological gravitational-wave backgrounds, as well as continuous-wave emitters. We present results of such a search using data from the first observing run through the first portion of the fourth observing run of the LIGO-Virgo-KAGRA Collaborations. We apply gravitational-wave radiometer techniques to generate skymaps and search for both narrowband and broadband persistent gravitational-wave sources. Additionally, we use spherical harmonic decomposition to probe spatially extended sources. No evidence of persistent gravitational-wave signals is found, and we set the most stringent constraints to date on such emissions. For narrowband point sources, our sensitivity estimate to effective strain amplitude lies in the range ( 0.03 – 8.4 ) × 10 − 24 across all-sky and frequency range ( 20 − 160 ) Hz. For targeted sources—Scorpius X-1, SN 1987A, the Galactic Center, Terzan 5, and NGC 6397—we constrain the strain amplitude with best limits ranging from ∼ 1.1 × 10 − 25 to 6.5 × 10 − 24 . For persistent broadband sources, we constrain the gravitational-wave flux F α , n ^ 95 % , UL ( 25 Hz ) < ( 0.008 – 5.5 ) × 10 − 8 erg cm − 2 s − 1 Hz − 1 , depending on the sky direction n ^ and spectral index α = 0 , 2 / 3 , 3. Finally, for extended sources, we place upper limits on the angular power spectrum C ℓ 1 / 2 < ( 0.63 – 17 ) × 10 − 10 sr − 1 .

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DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Directional search for persistent gravitational waves: Results from the first part of LIGO-Virgo-KAGRA’s fourth observing run
Date Crossref
06/07/2026
Éditeur
American Physical Society (APS)
Type
journal-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

Max Planck Institute for Gravitational PhysicsUniversity of SalernoUniversity of WarwickAustralian Regenerative Medicine InstituteMonash UniversityPennsylvania State UniversityLeibniz University HannoverUniversity of Wisconsin–MilwaukeeCalifornia Institute of TechnologyLouisiana State UniversityTata Institute of Fundamental ResearchAix-Marseille UniversitéUCLouvainQueen Mary University of LondonUniversity of California SystemUniversity of Minnesota SystemInstituto Nacional de Pesquisas EspaciaisUniversité Paris CitéUniversity of Rome Tor VergataUniversity of AntwerpNational Astronomical Observatory of JapanIstituto Nazionale di Fisica Nucleare, Sezione di TorinoFriedrich Schiller University JenaUniversity of GenoaUniversité Savoie Mont BlancUniversity of Naples Federico IICardiff UniversityAustralian National UniversityMassachusetts Institute of TechnologyMaastricht UniversityNational Institute for Subatomic PhysicsSapienza University of RomeUniversité Paris-SaclayThe University of TokyoBarcelona Institute of Science and TechnologyInstitute of Science and TechnologyGran Sasso Science InstituteUniversity of FloridaUniversity of UdineTecnológico de MonterreyUniversità di CamerinoUniversity of WashingtonCalifornia State University, FullertonUniversity of StrathclydeLyon 1 UniversitéGeorgia Institute of TechnologyUniversidad de LondresThe Graduate University for Advanced Studies, SOKENDAIUniversity of UrbinoEuropean Gravitational ObservatoryLIGO Scientific CollaborationUniversité de StrasbourgKing's College LondonKorea Institute of Science & Technology InformationThe University of OsakaHigh Energy Accelerator Research OrganizationUtrecht UniversityThe University of Western AustraliaUniversity of PortsmouthUniversity of TrentoUniversity of PerugiaSyracuse UniversityInter-University Centre for Astronomy and AstrophysicsUniversity of PisaInstitut d'Estudis Espacials de CatalunyaUniversitat de BarcelonaUniversity of GlasgowHUN-REN Wigner Research Centre for PhysicsConcordia University WisconsinStanford UniversityUniversity of MichiganUniversity of PaduaInstitute for Plasma ResearchGhent UniversityPolish Academy of SciencesUniversität HamburgFundació Universitat-Empresa de les Illes BalearsUniversitat de les Illes BalearsInstitut National de Physique Nucléaire et de Physique des ParticulesUniversity of SienaVillanova UniversityKenyon CollegeMissouri University of Science and TechnologyVrije Universiteit AmsterdamLomonosov Moscow State UniversityKU LeuvenRochester Institute of TechnologyUniversité Libre de BruxellesBar-Ilan UniversityUniversité Côte d'AzurObservatoire de la Côte d’AzurUniversity of British ColumbiaThe University of AdelaideUniversité Rennes 2Université de RennesUniversity of BirminghamWashington State UniversityCornell UniversitySorbonne UniversitéLaboratoire MédiationsChristopher Newport UniversityThe University of MelbourneAstronomical ObservatoryUniversity of Maryland, College ParkUniversity of Milano-BicoccaUniversité de LyonUniversity of ChicagoUniversity of ArizonaUniversity of Massachusetts DartmouthUniversidad de GuadalajaraInstitute for Space Astrophysics and PlanetologyColorado State UniversityUniversitat de ValènciaNational Central UniversityNational Tsing Hua UniversityCharles Sturt UniversityVanderbilt UniversityNational Yang Ming Chiao Tung UniversityChinese Academy of SciencesKamchatka State University named after Vitus BeringUniversidad del NoresteUniversity of ToyamaCarleton CollegeUniversity of SzegedSwinburne University of TechnologyUniversity of CagliariNational Institute for AstrophysicsMontana State UniversityUniversity of UtahJohns Hopkins UniversityUniversity of Rhode IslandThe University of Texas Rio Grande ValleyUniversity of LiègeIstituto Nazionale di Fisica NucleareIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of BolognaUniversity of ManitobaIstituto Nazionale di Fisica Nucleare, Centro Nazionale Analisi FotogrammiUniversity of SassariLaboratoire de Physique de Clermont AuvergneNormandie UniversitéUniversity of SheffieldLaboratoire des Matériaux AvancésUniversity of FlorenceUniversidade de Santiago de CompostelaUniversity of ParmaCalifornia State University SystemMarquette UniversityPerimeter InstituteUniversité Paris Sciences et LettresUniversity of TriesteVrije Universiteit BrusselUniversity of ZurichUniversity of TorontoStony Brook UniversityMontclair State UniversityUniversity of MinhoSuperconducting and other Innovative Materials and Devices InstituteUniversity of BasilicataWestern Washington UniversityUniversity of the West of ScotlandBarry UniversityEötvös Loránd UniversityOsaka Metropolitan UniversityUniversity of SannioUniversidad Autónoma de MadridLe Mans UniversitéLaboratoire d'Acoustique de l'Université du MansUniversity of SouthamptonRoma Tre UniversityUniversity of Nevada, RenoUniversity of NottinghamAriel UniversityUniversity of MississippiInstitute of Science TokyoChinese University of Hong KongAmerican UniversityUniversity of MilanFukuoka UniversityUniversity of CambridgeLancaster University GhanaNihon UniversityNiigata UniversityTamkang UniversityRutherford Appleton LaboratoryAoyama Gakuin UniversityHelmut Schmidt UniversityUniversity of BiałystokUniversity of Chinese Academy of SciencesSungkyunkwan UniversityUlsan National Institute of Science and TechnologyChung-Ang UniversityUniversity of Washington BothellJoseph Ayo Babalola UniversityEwha Womans University Medical CenterNational Institute for Mathematical SciencesKorea Astronomy and Space Science InstituteChungnam National UniversityNagoya UniversityAristotle University of ThessalonikiBard CollegeTechnische Universität BraunschweigJagiellonian UniversityPolytechnique MontréalUniversité de MontréalInje UniversitySeoul National UniversityNational Cheng Kung UniversityScuola Normale SuperioreInstitució Catalana de Recerca i Estudis AvançatsInstitute for High Energy PhysicsHeidelberg UniversityTokyo City UniversityTsinghua UniversityInstitut des Hautes Études ScientifiquesRyukoku UniversityPhenikaa UniversityUniversity of StavangerHiroshima UniversityUniversity of AmsterdamUniversity College LondonObservatoire de ParisLaboratoire Univers et ThéoriesCentral Glass and Ceramic Research InstituteInstitute for Complex SystemsYonsei UniversityHobart and William Smith CollegesCentro Ricerche Enrico FermiKennesaw State UniversityUniversidad de AntioquiaUniversidad Politécnica de MadridUniversity of FerraraToho UniversityPeking UniversityLaboratoire Modélisation et Simulation Multi-EchelleOsaka Institute of TechnologyGoddard Space Flight CenterKōchi UniversityUniversity of WarsawKyoto UniversityUniversity of CataniaNational Defense Academy of JapanEindhoven University of TechnologyBeijing Normal UniversityWuhan University

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