{"paper":{"title":"KiDS-Legacy: Cosmological constraints from cosmic shear with the complete Kilo-Degree Survey","license":"http://creativecommons.org/licenses/by/4.0/","headline":"KiDS-Legacy cosmic shear analysis constrains S_8 to 0.815 in 0.73 sigma agreement with Planck.","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Andrej Dvornik, Angus H. Wright, Anjitha John William, Anna Wittje, Arthur Loureiro, Benjamin Giblin, Benjamin Joachimi, Benjamin St\\\"olzner, Catherine Heymans, Christos Georgiou, Constance Mahony, Giorgio Francesco Lesci, Hendrik Hildebrandt, Henk Hoekstra, Jelte de Jong, Joachim Harnois-D\\'eraps, Konrad Kuijken, Laila Linke, Lance Miller, Lauro Moscardini, Lucas Porth, Maciej Bilicki, Marika Asgari, Mario Radovich, Matteo Maturi, Maximilian von Wietersheim-Kramsta, Mijin Yoon, Nicola R. Napolitano, Nora Elisa Chisari, Peter Schneider, Pierre Burger, Priyanka Jalan, Robert Reischke, Shahab Joudaki, Shun-Sheng Li, Tilman Tr\\\"oster, Yun-Hao Zhang, Ziang Yan","submitted_at":"2025-03-25T08:30:40Z","abstract_excerpt":"We present cosmic shear constraints from the completed Kilo-Degree Survey (KiDS), where the cosmological parameter $S_8\\equiv\\sigma_8\\sqrt{\\Omega_{\\rm m}/0.3} = 0.815^{+0.016}_{-0.021}$, is found to be in agreement ($0.73\\sigma$) with results from the Planck Legacy cosmic microwave background experiment. The final KiDS footprint spans $1347$ square degrees of deep nine-band imaging across the optical and near-infrared, along with an extra $23$ square degrees of KiDS-like calibration observations of deep spectroscopic surveys. Improvements in our redshift distribution estimation methodology, co"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"S_8 ≡ σ_8 √(Ω_m / 0.3) = 0.815^{+0.016}_{-0.021}, found to be in agreement (0.73σ) with results from the Planck Legacy cosmic microwave background experiment.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The new physically motivated intrinsic alignment model that depends jointly on halo mass and spectral type distributions, together with the improved redshift distribution estimation extending to z_B ≤ 2.0, accurately captures all relevant systematics.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"KiDS-Legacy measures S8 = 0.815^{+0.016}_{-0.021} from cosmic shear over 1347 square degrees, consistent with Planck at 0.73 sigma.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"KiDS-Legacy cosmic shear analysis constrains S_8 to 0.815 in 0.73 sigma agreement with Planck.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"a01fedbc99ca0ebc0c00e8bfb5ab208ce24b2ca6b152c47f49c1492cb5437c62"},"source":{"id":"2503.19441","kind":"arxiv","version":2},"verdict":{"id":"5f0dc405-58da-4fe9-b9ce-7f310a36a8ec","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-16T21:01:55.158091Z","strongest_claim":"S_8 ≡ σ_8 √(Ω_m / 0.3) = 0.815^{+0.016}_{-0.021}, found to be in agreement (0.73σ) with results from the Planck Legacy cosmic microwave background experiment.","one_line_summary":"KiDS-Legacy measures S8 = 0.815^{+0.016}_{-0.021} from cosmic shear over 1347 square degrees, consistent with Planck at 0.73 sigma.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The new physically motivated intrinsic alignment model that depends jointly on halo mass and spectral type distributions, together with the improved redshift distribution estimation extending to z_B ≤ 2.0, accurately captures all relevant systematics.","pith_extraction_headline":"KiDS-Legacy cosmic shear analysis constrains S_8 to 0.815 in 0.73 sigma agreement with Planck."},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":1,"snapshot_sha256":"8e03bd219963dcbb61f7aaad84fdf4435f8a70b08870eaec72919d529b903181"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}