Dark matter direct (and indirect) detection experiments usually can only determine a specific combination of a power of the coupling and the dark matter density. This is also true for axion haloscopes which are sensitive to the product g ² _aγγρ _DM, the combination of axion-photon coupling squared and the dark matter density. In this note we show, that in the lucky case when we intersect with a so-called axion minicluster of a suitable size, we can utilize the spectral information available in haloscopes to determine the gravitational potential of the minicluster. We can then use this to measure separately the coupling and the density of the minicluster.

中文翻译：

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使用轴子微团簇来解开轴子-光子耦合和暗物质密度


暗物质直接（和间接）检测实验通常只能确定耦合功率和暗物质密度的特定组合。对于轴子光晕镜来说也是如此，它对乘积 g ² _aγγ ρ _DM 敏感，即轴子-光子耦合平方和暗物质密度的组合。在这篇文章中，我们表明，在幸运的情况下，当我们与适当大小的所谓轴子微型星团相交时，我们可以利用光晕镜中可用的光谱信息来确定微型星团的引力势。然后我们可以用它来单独测量微型簇的耦合和密度。