Fuzzy dark matter fails to explain dark matter cores

IF 5 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Physics of the Dark Universe Pub Date : 2025-07-12 DOI:10.1016/j.dark.2025.102010

María Benito , Gert Hütsi , Kristjan Müürsepp , Jorge Sánchez Almeida , Juan Urrutia , Ville Vaskonen , Hardi Veermäe

引用次数: 0

Abstract

Ultrafaint dwarf galaxies (UFDs) are ideal for studying dark matter (DM) due to minimal baryonic effects. UFD observations suggest cored DM profiles. We find that the core radius–stellar mass scaling predicted by fuzzy dark matter (FDM) is at

6.1 σ

tension with UFD observations. Combining observations from 27 UFDs, the required FDM mass

m_{a} = 3 . 2_{- 0.6}^{+ 0.8} \times 1 0^{- 21} eV

is also in conflict with existing Lyman-

α

bounds. Our results suggest that FDM cannot provide a consistent explanation for DM cores and imply

m_{a} > 2.2 \times 1 0^{- 21} eV

at to

2 σ

CL.

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模糊暗物质无法解释暗物质核

超小矮星系（ufd）由于重子效应极小，是研究暗物质的理想选择。UFD观察提示核心DM剖面。通过UFD观测，我们发现模糊暗物质（FDM）预测的核心半径-恒星质量尺度在6.1σ张力。结合27个ufd的观测结果，所需的FDM质量ma=3.2−0.6+0.8×10−21eV也与现有的Lyman-α界相冲突。我们的研究结果表明，FDM不能为DM核心提供一致的解释，并暗示ma>；2.2×10−21eV在2σ CL。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physics of the Dark Universe ASTRONOMY & ASTROPHYSICS-

CiteScore

9.60

自引率

7.30%

发文量

118

审稿时长

61 days

期刊介绍： Physics of the Dark Universe is an innovative online-only journal that offers rapid publication of peer-reviewed, original research articles considered of high scientific impact. The journal is focused on the understanding of Dark Matter, Dark Energy, Early Universe, gravitational waves and neutrinos, covering all theoretical, experimental and phenomenological aspects.