Optical+Near-IR Analysis of a Newly Confirmed Einstein Ring at z ∼ 1 from the Kilo-Degree Survey: Dark Matter Fraction, Total and Dark Matter Density Slope, and Initial Mass Function

Acknowledgements: We acknowledge the support from the National Natural Science Foundation of China (Grant No. 12588202). R.L. acknowledges the National Natural Science Foundation of China (No. 12203050), the China Manned Space Program (grant No. CMS-CSST-2025-A03), and the Natural Science Foundation of Henan Province of China (grant No. 242300420235). N.R.N. acknowledges financial support from the Research Fund for International Scholars of the National Science Foundation of China, grant No. 12150710511. R.L. acknowledges the support by National Key R&D Program of China No. 2022YFF0503403, the support of National Natural Science Foundation of China (No 11988101), the support from the Ministry of Science and Technology of China (No. 2020SKA0110100), the science research grants from the China Manned Space Program (No. CMS-CSST-2025-A03), CAS Project for Young Scientists in Basic Research (No. YSBR-062). C.T. acknowledges funding from INAF research grant 2022 LEMON. H.C.F. acknowledges the financial support of the National Natural Science Foundation of China (grant No. 12203096) and Yunnan Fundamental Research Projects (grant No. 202301AT070339). G.D. acknowledges support by UKRI-STFC grants ST/T003081/1 and ST/X001857/1.