In-situ globular clusters in fuzzy dark matter halos exhibit three regimes based on particle mass m22, with compact systems for low m22, CDM-like for m22~7, and extended massive systems for high m22, providing a probe for alternative dark matter.
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Galaxy cluster counts from eRASS1 plus weak lensing data set the tightest existing upper bounds on ultralight axion relic density Ω_a around 10^{-27} eV (Ω_a < 0.0035) and 10^{-26} eV (Ω_a < 0.0079) at 95% CL.
citing papers explorer
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In-situ globular clusters in alternative dark matter Milky Way galaxies: a first approach to fuzzy and core-like dark matter theories
In-situ globular clusters in fuzzy dark matter halos exhibit three regimes based on particle mass m22, with compact systems for low m22, CDM-like for m22~7, and extended massive systems for high m22, providing a probe for alternative dark matter.
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The SRG/eROSITA all-sky survey: Constraints on Ultra-light Axion Dark Matter through Galaxy Cluster Number Counts
Galaxy cluster counts from eRASS1 plus weak lensing data set the tightest existing upper bounds on ultralight axion relic density Ω_a around 10^{-27} eV (Ω_a < 0.0035) and 10^{-26} eV (Ω_a < 0.0079) at 95% CL.