SHARP–IX. The dense, low-mass perturbers in B1938 + 666 and J0946 + 1006 : implications for cold and self-interacting dark matter

Tajalli, M.Vegetti, S.O’Riordan, C.M.White, S.D.M.Fassnacht, C.D.Powell, D.M.McKean, John P.Despali, G.2026-04-222026-04-222025-10Tajalli, M., Vegetti, S., O'Riordan, C.M. et al. 2025, 'SHARP–IX. The dense, low-mass perturbers in B1938 + 666 and J0946 + 1006 : implications for cold and self-interacting dark matter', Monthly Notices of the Royal Astronomical Society, vol. 543, pp. 540-564. https://doi.org/10.1093/mnras/staf1357.0035-8711 (print)1365-2966 (online)10.1093/mnras/staf1357http://hdl.handle.net/2263/109701DATA AVAILABILITY : The observational data used in this paper are publicly available through the HST and Keck archives. The TNG50 simulation data are accessible at https://www.tng-project.org (Nelsonetal.2019a ).Please read abstract in the article.en© The Author(s) 2025. This article is licensed under a Creative Commons Attribution 4.0 International License.Gravitational lensing: strongGalaxies: haloesGalaxies: structureDark matterSpace sustainabilitySHARP–IX. The dense, low-mass perturbers in B1938 + 666 and J0946 + 1006 : implications for cold and self-interacting dark matterArticle