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Searching for light in the darkness: Bounds on ALP dark matter with the optical MUSE-faint survey
Physics Letters B ( IF 4.4 ) Pub Date : 2021-03-01 , DOI: 10.1016/j.physletb.2021.136075
Marco Regis , Marco Taoso , Daniel Vaz , Jarle Brinchmann , Sebastiaan L. Zoutendijk , Nicolas F. Bouché , Matthias Steinmetz

We use MUSE spectroscopic observations of the dwarf spheroidal galaxy Leo T between 470 and 935 nm to search for radiative decays of axion like particles (ALPs). Under the assumption that ALPs constitute the dark matter component of the Leo T halo, we derive bounds on the effective ALP-two-photon coupling. We improve existing limits by more than one order of magnitude in the ALP mass range 2.7-5.3 eV.

中文翻译:

在黑暗中寻找光:用光学 MUSE 微弱调查对 ALP 暗物质的界限

我们使用 MUSE 光谱观测在 470 到 935 nm 之间的矮椭球星系 Leo T 来寻找轴子样粒子 (ALP) 的辐射衰变。在 ALP 构成 Leo T 晕的暗物质成分的假设下,我们推导出有效 ALP-双光子耦合的界限。我们将 ALP 质量范围 2.7-5.3 eV 中的现有限制提高了一个数量级以上。
更新日期:2021-03-01
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