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The “Little Dark Dot”: Evidence for Self-interacting Dark Matter in the Strong Lens SDSS J0946+1006?

  • Authors: Shubo Li, Ran Li, Kaihao Wang, Zixiang Jia, Xiaoyue Cao, Carlos S. Frenk, Fangzhou Jiang, Aristeidis Amvrosiadis, Shaun Cole, Qiuhan He, Samuel C. Lange, Richard Massey, James W. Nightingale, Andrew Robertson, Maximilian von Wietersheim-Kramsta, Xianghao Ma

Shubo Li et al 2025 The Astrophysical Journal 994 .

  • Provider: AAS Journals

Caption: Figure 6.

The posterior distributions of M200, c200, and rt from the tNFW model fitting. In the 1D posteriors, the black dashed lines indicate the medians and the 3σ boundaries. In the 2D posterior, the black contours represent the 1σ, 2σ, and 3σ regions. The red line marks the M200 value of the input SIDM halo used to generate the mock image, while the orange dashed line corresponds to its c200 value.

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