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A Diffusion Model Drew Dark Matter Across 90 Megaparsecs
The released SDSS projection reconstructs clusters, filaments and voids from stellar-mass density.
Summary
The released SDSS projection reconstructs clusters, filaments and voids from stellar-mass density.
A model trained on CAMELS and checked against independent IllustrisTNG data reconstructed a 90-by-90 inverse-h-megaparsec field from SDSS galaxies. Aperture masses agree statistically with group catalogs, but the map remains a simulation-trained inference, not direct dark-matter imaging.
Why it matters
The released SDSS projection reconstructs clusters, filaments and voids from stellar-mass density.
Limits and context
- Aperture masses agree statistically with group catalogs, but the map remains a simulation-trained inference, not direct dark-matter imaging.
Key claims
The released SDSS projection reconstructs clusters, filaments and voids from stellar-mass density.
Qualification: Aperture masses agree statistically with group catalogs, but the map remains a simulation-trained inference, not direct dark-matter imaging.
Evidence: source-2026-09-20-020
Sources
- arXiv preprint 2609.19295arXiv · primary research
Corrections
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