Conveners
Parallel session - Cosmology II
- Chair: Shunichi Horigome
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Kanako Narita11/11/2025, 15:30
Among the various dark matter candidates, axion-like dark matter—particularly in the ultralight regime around 10^−22 eV—has attracted significant attention in recent years, as it has been proposed as a potential solution to the small-scale structure problems in the standard cosmological model.
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In this talk, we present a new observational constraint on ALP dark matter based on archival data... -
Erick Munive Villa11/11/2025, 15:50
Ultralight dark matter (ULDM), characterized by particles with masses log(m/eV) ~ -22 and de Broglie wavelengths on kiloparsec scales, behaves as a coherent quantum field at galactic scales. This wave-like nature drives time-dependent gravitational potential fluctuations that can dynamically heat stellar systems. In this talk, I will present the results of a numerical study of ULDM...
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Dafa Wardana11/11/2025, 16:10
The estimation of the fuzzy dark matter (FDM) particle mass from the Milky Way’s dwarf satellite galaxies relies critically on the core–halo mass relation. Previous studies have generally assumed a one-to-one core–halo mass relation, despite growing evidence that this relation exhibits considerable intrinsic scatter. Neglecting this diversity could lead to artificially tight constraints and...
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