{"id":"W4406092706","doi":"10.3847/1538-4357/adb3a0","title":"Search for Continuous Gravitational Waves from Known Pulsars in the First Part of the Fourth LIGO-Virgo-KAGRA Observing Run","year":2025,"lang":"en","type":"article","venue":"The Astrophysical Journal","topic":"Pulsars and Gravitational Waves Research","field":"Physics and Astronomy","cited_by":14,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"European Social Fund; Astrophysics Division; Astrophysics Science Division; National Research, Development and Innovation Office; Institute for Cosmic Ray Research, University of Tokyo; Institut National de Physique Nucléaire et de Physique des Particules; Great Southern Development Commission, Government of Western Australia; Agencia Estatal de Investigación; Fonds de recherche du Québec – Nature et technologies; Science and Engineering Research Board; Japan Society for the Promotion of Science; Smithsonian Astrophysical Observatory; Goddard Space Flight Center; National Science and Technology Council; European Regional Development Fund; Centre National de la Recherche Scientifique; ICTP South American Institute for Fundamental Research; Ministry of Science and ICT, South Korea; Nemzeti Kutatási Fejlesztési és Innovációs Hivatal; National Research Foundation; Vlaamse regering; National Astronomical Observatory of Japan; Conseil Régional, Île-de-France; Israel Science Foundation; Scottish Universities Physics Alliance; National Natural Science Foundation of China; National Research Foundation of Korea; Division of Human Resource Development; Korea Astronomy and Space Science Institute; Ministerio de Ciencia, Innovación y Universidades; Nuclear Safety and Security Commission; Observatoire de Paris, Université de Recherche Paris Sciences et Lettres; Hungarian Scientific Research Fund; Generalitat de Catalunya; Generalitat Valenciana; Fonds Wetenschappelijk Onderzoek; Ministry of Education, India; Consejo Nacional de Investigaciones Científicas y Técnicas; Agencia Nacional de Investigación y Desarrollo; Istituto Nazionale di Fisica Nucleare; Smithsonian Institution; U.S. Department of Energy; Science and Technology Facilities Council; Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung; Centre National d’Etudes Spatiales; Korea Institute of Science and Technology Information; Nederlandse Organisatie voor Wetenschappelijk Onderzoek; Natural Sciences and Engineering Research Council of Canada; Ministry of Education, Culture, Sports, Science and Technology; Council of Scientific and Industrial Research, India; Russian Science Foundation; Universidad Nacional de La Plata; European Commission; Leverhulme Trust; Scottish Funding Council; McGill Space Institute; Narodowa Agencja Wymiany Akademickiej; Centres de Recerca de Catalunya; Institut des Origines de Lyon; McGill University; Fonds De La Recherche Scientifique - FNRS; Fundacja na rzecz Nauki Polskiej; Academia Sinica; Abdus Salam International Centre for Theoretical Physics; National Aeronautics and Space Administration; National Science Foundation","keywords":"Physics; LIGO; Pulsar; Neutron star; Gravitational wave; Millisecond pulsar; Astrophysics; Amplitude; Binary pulsar; Astronomy; Crab Pulsar; General relativity; Chirp; Classical mechanics; Quantum mechanics","routes":{"ca_aff":false,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0007074222,0.000434663,0.0005396787,0.001899115,0.0008016228,0.0008222387,0.0004824435,0.000372713,0.000857848],"category_scores_gemma":[0.001877308,0.0002434456,0.0005466171,0.001057058,0.000416752,0.0002461197,0.001304335,0.0003547063,0.0002621773],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0004903259,"about_ca_system_score_gemma":0.0005531122,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.004393653,"about_ca_topic_score_gemma":0.007900034,"domain_scores_codex":[0.9991789,0.0001284146,0.00003678978,0.0002087275,0.0002475931,0.0001995117],"domain_scores_gemma":[0.9973806,0.0006542453,0.0008920382,0.0004376652,0.0001881717,0.0004471637],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0004177291,0.0001052743,0.9490415,0.00003607868,0.0002604842,0.000224529,0.0003319965,0.002206331,0.0321377,0.0002867926,0.0004930946,0.01445854],"study_design_scores_gemma":[0.00003043786,0.0001918573,0.9868569,0.000007588291,0.000138792,0.0001927517,0.0001591044,0.004575605,0.005801412,0.0001909756,0.001837838,0.00001689835],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9987736,0.00002001729,0.0004227426,0.00001397327,0.000001651182,0.000006686299,0.0003019868,0.00003228244,0.0004270155],"genre_scores_gemma":[0.9959548,0.00001997311,0.001272985,0.00001234799,0.000005955002,0.00001780462,0.0024273,0.00001514651,0.0002738438],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.004393653,"threshold_uncertainty_score":0.008736193,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01707410401805247,"score_gpt":0.3083397078999397,"score_spread":0.2912656038818872,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). 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