Extremely light bosonic wave dark matter ($\psi$DM) is an emerging dark matter candidate contesting the conventional cold dark matter paradigm and a model subject to intense scrutiny of late. This work for the first time reports testable salient features pertinent to gravitational lenses of $\psi$DM halos. $\psi$DM halos are distinctly filled with large-amplitude, small-scale density fluctuations with $\delta\rho/\rho_{\rm halo}\sim 1$ in form of density granules. We have found new critical features appearing in the highly de-magnified lens center when the halo has sufficiently high surface density near a very compact massive core.

中文翻译：

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模糊重力透镜的多重图像和通量比异常

极轻的波子暗物质（$\psi$DM）是一个新兴的暗物质候选者，它与传统的冷暗物质范例竞争，并且是最近受到严格审查的模型。这项工作首次报告了与重力透镜有关的可测试的显着特征。$\psi$DM光环。 $\psi$DM光晕明显充满了大幅度，小规模的密度波动，其中$ \ delta \ rho / \ rho _ {\ rm halo} \ sim 1 $为密度颗粒。我们发现，当光晕在非常紧凑的块状芯附近具有足够高的表面密度时，在高度缩小的透镜中心会出现新的关键特征。