论文标题
用强力镜头限制共鸣的暗物质自我互动
Constraining resonant dark matter self-interactions with strong gravitational lenses
论文作者
论文摘要
我们设计了一种从观察四倍的类星体观察中限制自相互作用的暗物质（SIDM）的方法，并将其应用于具有远距离黑力的五个自我相互作用电位。我们考虑了几种具有吸引力潜力的SIDM模型，可允许形成准结合状态，从而在以低于$ 50 \ \ \ rm {km} \ rm {s^{ - 1}} $的特定速度定位的横截面引起共鸣。我们提出了这些共振，这些共振通过超出数量级的顺序扩增或抑制了横截面幅度，加速或延迟了低质量暗物质晕圈中核心崩溃的发作，并在我们考虑的五个相互作用电位的核心崩溃的时间表上得出了约束。我们的数据强烈地消除了大多数Halos核心崩溃的场景，其横截面强度超过$ 100 \ \ \ rm {cm^2} \ rm {g}^{ - 1} $以相对速度在$ 30 \ \ \ \ \ rm {km {km} $ {这项工作为探索SIDM理论的广阔景观开辟了新的途径。
We devise a method to constrain self-interacting dark matter (SIDM) from observations of quadruply-imaged quasars, and apply it to five self-interaction potentials with a long-range dark force. We consider several SIDM models with an attractive potential that allows for the formation of quasi-bound states, giving rise to resonant features in the cross section localized at particular velocities below $50 \ \rm{km} \ \rm{s^{-1}}$. We propose these resonances, which amplify or suppress the cross section amplitude by over an order of magnitude, accelerate or delay the onset of core collapse in low-mass dark matter halos, and derive constraints on the timescale for core collapse for the five interaction potentials we consider. Our data strongly disfavors scenarios in which a majority of halos core collapse, with the strongest constraints obtained for cross section strengths exceeding $100 \ \rm{cm^2} \rm{g}^{-1}$ at relative velocities below $30 \ \rm{km} \ \rm{s^{-1}}$. This work opens a new avenue to explore the vast landscape of possible SIDM theories.
