Stolzner, Benjamin;
Wright, Angus H;
Asgari, Marika;
Heymans, Catherine;
Hildebrandt, Hendrik;
Hoekstra, Henk;
Joachimi, Benjamin;
... Zhang, Yun-Hao; + view all
(2025)
KiDS-Legacy: Consistency of cosmic shear measurements and joint cosmological constraints with external probes.
Astronomy & Astrophysics
, 702
, Article A169. 10.1051/0004-6361/202554893.
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Abstract
We present a cosmic shear consistency analysis of the final data release from the Kilo-Degree Survey (KiDS-Legacy). By adopting three tiers of consistency metrics, we compared cosmological constraints between subsets of the KiDS-Legacy dataset split by redshift, angular scale, galaxy colour, and spatial region. We also reviewed a range of two-point cosmic shear statistics. As all the data passed our set of consistency metric tests, we demonstrate that KiDS-Legacy is the most internally consistent KiDS catalogue to date. In a joint cosmological analysis of KiDS-Legacy and DES Y3 cosmic shear, combined with data from the Pantheon+ Type Ia supernovae compilation and baryon acoustic oscillations from DESI Y1, we report constraints that are consistent with Planck measurements of the cosmic microwave background, with (Formula presented)
| Type: | Article |
|---|---|
| Title: | KiDS-Legacy: Consistency of cosmic shear measurements and joint cosmological constraints with external probes |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1051/0004-6361/202554893 |
| Publisher version: | https://doi.org/10.1051/0004-6361/202554893 |
| Language: | English |
| Additional information: | Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Gravitational lensing: weak, methods: statistical, cosmological parameters, cosmology: observations, large-scale structure of Universe |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10217021 |
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