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Interpreting the Extremely Diffuse Stellar Distribution of the Nube Galaxy through Fuzzy Dark Matter

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arxiv 2412.01307 v2 pith:SE2UE3FW submitted 2024-12-02 astro-ph.GA hep-ph

classification astro-ph.GAhep-ph
keywords distributionnubestellardarkdiffuseextremelymatterdynamical
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abstract

Recent observations have uncovered a remarkably flat and extremely diffuse stellar distribution within the almost dark dwarf galaxy Nube, posing a challenge to the standard cold dark matter scenario. In this study, we employ numerical simulations to explore the possibility that this anomalous stellar distribution can be attributed to the dynamical heating effect of fuzzy dark matter (FDM). The relatively isolated location and low baryon fraction of Nube make it an ideal system for investigating this effect. Our findings indicate that by adopting a halo profile consistent with the dynamical mass estimation of Nube and an FDM particle mass on the order of $10^{-23}$ eV, the final 2D stellar distribution derived from simulation closely matches observational data. These results suggest that FDM could provide an explanation for the extremely diffuse stellar distribution of Nube.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Tidal Suppression of Fuzzy Dark Matter Heating in Milky Way Satellite Galaxies

    astro-ph.CO 2025-07 conditional novelty 7.0 of 10

    Tidal stripping by the Milky Way and LMC suppresses fuzzy dark matter heating in Fornax, removing the strongest dwarf-galaxy constraint against m_a ~ 10^-22 eV.

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