Giblin, BenjaminBenjaminGiblinHeymans, CatherineCatherineHeymansAsgari, MarikaMarikaAsgariHildebrandt, HendrikHendrikHildebrandtHoekstra, HenkHenkHoekstraJoachimi, BenjaminBenjaminJoachimiKannawadi, ArunArunKannawadiKuijken, KonradKonradKuijkenLin, Chieh-AnChieh-AnLinMiller, LanceLanceMillerTröster, TilmanTilmanTröstervan den Busch, Jan LucaJan Lucavan den BuschWright, Angus H.Angus H.WrightBilicki, MaciejMaciejBilickiBlake, ChrisChrisBlakede Jong, JelteJeltede JongDvornik, AndrejAndrejDvornikErben, ThomasThomasErbenGETMAN, FEDORFEDORGETMANNAPOLITANO, Nicola RosarioNicola RosarioNAPOLITANOSchneider, PeterPeterSchneiderShan, HuanYuanHuanYuanShanValentijn, EdwinEdwinValentijn2025-03-072025-03-0720210004-6361http://hdl.handle.net/20.500.12386/36494We present weak lensing shear catalogues from the fourth data release of the Kilo-Degree Survey, KiDS-1000, spanning 1006 square degrees of deep and high-resolution imaging. Our `gold-sample' of galaxies, with well-calibrated photometric redshift distributions, consists of 21 million galaxies with an effective number density of 6.17 galaxies per square arcminute. We quantify the accuracy of the spatial, temporal, and flux-dependent point-spread function (PSF) model, verifying that the model meets our requirements to induce less than a 0.1σ change in the inferred cosmic shear constraints on the clustering cosmological parameter S<SUB>8</SUB> = σ<SUB>8</SUB> √Ω<SUB>m</SUB>/0.3.. Through a series of two-point null-tests, we validate the shear estimates, finding no evidence for significant non-lensing B-mode distortions in the data. The PSF residuals are detected in the highest-redshift bins, originating from object selection and/or weight bias. The amplitude is, however, shown to be sufficiently low and within our stringent requirements. With a shear-ratio null-test, we verify the expected redshift scaling of the galaxy-galaxy lensing signal around luminous red galaxies. We conclude that the joint KiDS-1000 shear and photometric redshift calibration is sufficiently robust for combined-probe gravitational lensing and spectroscopic clustering analyses.STAMPAenArticle10.1051/0004-6361/2020388502-s2.0-85100085646http://arxiv.org/abs/2007.01845v2https://www.aanda.org/articles/aa/full_html/2021/01/aa38850-20/aa38850-20.html2021A&A...645A.105GFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation