论文标题
Subhalo质量功能和超轻玻色粒暗物质
The Subhalo Mass Function and Ultralight Bosonic Dark Matter
论文作者
论文摘要
最近，由于对Subhalo质量功能的低质量端的观察性推断，温暖的暗物质已越来越受到限制，这将被早期宇宙中的无暗物质流媒体抑制。在这项工作中，我们指出，基于类似的考虑因素，可以将约束放在超轻的骨骼暗物质（通常称为“模糊的暗物质”）上。最近对数量的强力镜头和恒星流的波动的最新限制分别转化为$ \ sim 2.1 \ times 10^{ - 21} $ eV，在包含所有暗物质的超级玻色子上。这些限制是对从Lyman-$α$森林对超轻暗物质的约束的补充，并且受到完全不同的假设和系统的不确定性。综上所述，这些探针强烈表明，带有质量$ \ sim 10^{ - 22} $ eV的暗物质不是调和冷暗物质模拟和小尺度上结构观察之间差异的可行方法。
Warm dark matter has recently become increasingly constrained by observational inferences about the low-mass end of the subhalo mass function, which would be suppressed by dark matter free streaming in the early Universe. In this work, we point out that a constraint can be placed on ultralight bosonic dark matter (often referred to as "fuzzy dark matter") based on similar considerations. Recent limits on warm dark matter from strong gravitational lensing of quasars and from fluctuations in stellar streams separately translate to a lower limit of $\sim 2.1 \times 10^{-21}$ eV on the mass of an ultralight boson comprising all dark matter. These limits are complementary to constraints on ultralight dark matter from the Lyman-$α$ forest and are subject to a completely different set of assumptions and systematic uncertainties. Taken together, these probes strongly suggest that dark matter with a mass $\sim 10^{-22}$ eV is not a viable way to reconcile differences between cold dark matter simulations and observations of structure on small scales.
