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This document presents a study measuring the free-streaming length of dark matter using observations from the James Webb Space Telescope (JWST) on 28 strong gravitational lens systems. The analysis improves upon previous methods by reconstructing lensed arcs and measuring relative magnifications, leading to constraints on dark matter particle mass and formation mechanisms. The findings support predictions of cold dark matter (CDM) and provide upper limits on the free-streaming length, enhancing our understa
- Author
- sayo952
- Language
- EN