AI 中文总结
该研究提出暗物质-重子可分离性条件，利用暗物质缺失星系约束晚期暗物质相互作用、耗散及暗物质晕稳定性，补充宇宙学与实验室探针。
AI 中文摘要
暗物质缺失星系为检验星系演化过程中重子与暗物质能否充分分离提供了直接途径。我们基于两者的相对并入效率，提出暗物质-重子可分离性条件，要求最终暗物质与重子的比值低于观测确定的阈值。将该条件应用于高速碰撞场景，可约束暗物质-重子动量转移截面、相互作用暗物质占比及引力捕获效率。同一框架还能给出耗散暗物质丰度与冷却时间，以及超轻模糊暗物质从浅势或潮汐扰动势中的综合逃逸率的限制。这些结果表明，暗物质缺失星系可通过约束晚期暗物质相互作用、耗散及暗物质晕稳定性，补充宇宙学与实验室探针的不足。
英文摘要
Dark matter deficient galaxies provide a direct way to test whether baryons and dark matter can become sufficiently separated during galaxy evolution. We formulate a Dark Matter-Baryon Separability condition based on the relative incorporation efficiencies of the two components, requiring the final dark matter to baryon ratio to fall below an observationally defined threshold. Applied to high speed collisions, this condition constrains dark matter baryon momentum transfer cross section, interacting dark matter fraction and the efficiency of gravitational recapture. The same framework gives us bounds on the abundance and cooling time of dissipative dark matter, and on the integrated escape rate of ultralight fuzzy dark matter from shallow or tidally disturbed potentials. These results show how dark matter deficient galaxies can complement cosmological and laboratory probes by constraining late time dark matter interactions, dissipation and halo stability.
Comments7 pages with 1 figure, comments welcome
Journal refPhys.Dark Univ. 53 (2026) 102437
DOI：10.1016/j.dark.2026.102437
