{"id":"W4417117463","doi":"10.3847/2041-8213/ae2125","title":"Pan-STARRS Follow-up of the Gravitational-wave Event S250818k and the Light Curve of SN2025ulz","year":2025,"lang":"en","type":"article","venue":"The Astrophysical Journal Letters","topic":"Gamma-ray bursts and supernovae","field":"Physics and Astronomy","cited_by":5,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"Science and Technology Facilities Council; Planetary Science Division; Science Mission Directorate; Jet Propulsion Laboratory; Smithsonian Astrophysical Observatory; Max-Planck-Institut für Astronomie; Agencia Nacional de Investigación y Desarrollo; Los Alamos National Laboratory; Ministry of Education, India; Max-Planck-Gesellschaft; National Central University; Nuclear Safety and Security Commission; Space Telescope Science Institute; Queen's University Belfast; National Aeronautics and Space Administration; Eötvös Loránd Tudományegyetem; California Institute of Technology; Queen's University; Johns Hopkins University; National Science and Technology Council; Durham University; Smithsonian Institution; National Science Foundation","keywords":"Kilonova; Sky; Neutron star; Supernova; Light curve; Binary number; Redshift","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":[0.0001936878,0.0001848977,0.0001857498,0.0009194551,0.0003230405,0.0003701565,0.000182141,0.0002197343,0.001979701],"category_scores_gemma":[0.0003040985,0.000106093,0.0002136442,0.0004224002,0.0001566901,0.0001787019,0.0006639033,0.0002314299,0.0004454169],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0002638242,"about_ca_system_score_gemma":0.0001206142,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.006678579,"about_ca_topic_score_gemma":0.0221361,"domain_scores_codex":[0.9999117,0.00000669858,0.000004145541,0.00002715563,0.00002388084,0.00002645893],"domain_scores_gemma":[0.9997202,0.00001602994,0.0000739827,0.0000310372,0.00003578566,0.0001229965],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0005950539,0.0001002465,0.9456588,0.00004734761,0.00009293369,0.001243322,0.00036821,0.0003705215,0.02865157,0.0003516397,0.00229084,0.02022962],"study_design_scores_gemma":[0.000002815157,0.00003538082,0.9981377,0.00000467775,0.000007637888,0.0001470871,0.00006306339,0.0002097271,0.0005069502,0.00002991995,0.0008520694,0.000002969009],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9965715,0.00006640489,0.0001834582,0.00004074158,0.000008903859,0.00001001405,0.001048569,0.00004276588,0.00202755],"genre_scores_gemma":[0.996532,0.00003153167,0.0002655498,0.0000282474,0.00001071144,0.000006183851,0.002422045,0.00001019955,0.0006935169],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.006678579,"threshold_uncertainty_score":0.01327944,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.00706094088820347,"score_gpt":0.2193518968583365,"score_spread":0.212290955970133,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}