New 95% confidence limits on mixed fuzzy dark matter mass and interacting dark matter cross sections are set using Milky Way satellites for beyond-CDM fractions down to 50%, with power-law weakening of bounds and forecasts for future surveys.
Cosmological Probes of Dark Matter Interactions: The Next Decade
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abstract
Cosmological observations offer unique and robust avenues for probing the fundamental nature of dark matter particles-they broadly test a range of compelling theoretical scenarios, often surpassing or complementing the reach of terrestrial and other experiments. We discuss observational and theoretical advancements that will play a pivotal role in realizing a strong program of cosmological searches for the identity of dark matter in the coming decade. Specifically, we focus on measurements of the cosmic-microwave-background anisotropy and spectral distortions, and tracers of structure (such as the Lyman-$\alpha$ forest, galaxies, and the cosmological 21-cm signal).
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astro-ph.CO 1years
2026 1verdicts
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Mixed Dark Matter: Limits from the Milky Way Satellite Galaxies
New 95% confidence limits on mixed fuzzy dark matter mass and interacting dark matter cross sections are set using Milky Way satellites for beyond-CDM fractions down to 50%, with power-law weakening of bounds and forecasts for future surveys.