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.
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机译:我们在470和935 nm之间使用矮小球形星系leo t的缪斯光谱观察,以寻找轴静脉(Alps)的轴静脉蒸馏。在AlP构成Leo T Halo的暗物质成分的假设下,我们可以在有效的ALP-双光子耦合上获得界限。我们在ALP质量范围内将现有的限制改善了2.7-5.3 eV中的一个以上数量级。
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