发表机构
University of Science and Technology of China; Institute of High Energy Physics, Chinese Academy of Sciences; University of Chinese Academy of Sciences（中国科学技术大学; 中国科学院高能物理研究所; 中国科学院大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究提出自相互作用暗物质通过气体流入驱动晕收缩，使种子黑洞在不到1百万年内快速增质数个数量级，为早期宇宙大质量黑洞起源提供高效途径。
AI 中文摘要
早期宇宙中大质量黑洞的快速出现，可能与小红点相关，对从轻种子常规增长的理论提出了挑战。暗物质吸积提供了一条独特的途径，而自相互作用暗物质（SIDM）通过表现为碰撞流体使这一途径成为可能。我们表明，气体流入可以驱动SIDM晕的强烈局部收缩，在预先存在的黑洞种子周围聚集一个致密储库。随后，种子进入快速暗增长阶段，在不到1百万年内质量可增加数个数量级，然后过渡到较慢的吸积。我们通过求解包含SIDM自引力、碰撞热输运和吸收性黑洞汇的球对称欧拉方程，自洽地追踪这一过程，而非强加吸积历史。增长对晕质量依赖性最强，对流入气体比例、核尺寸和种子质量的敏感性较弱。因此，气体流入驱动的SIDM吸积为早期宇宙中产生大质量黑洞提供了一条高效途径。
英文摘要
The rapid emergence of massive black holes in the early Universe, possibly related to Little Red Dots, challenges conventional growth from light seeds. Dark-matter accretion offers a distinct route, and self-interacting dark matter (SIDM) makes it possible by behaving as a collisional fluid. We show that gas inflow can drive strong local contraction of an SIDM halo, assembling a dense reservoir around a pre-existing black-hole seed. The seed then enters a rapid dark-growth phase and can gain several orders of magnitude in mass within less than $1$ Myr before transitioning to slower accretion. We self-consistently follow this process by solving the spherical Euler equations with SIDM self-gravity, collisional heat transport, and an absorbing black-hole sink, rather than imposing an accretion history. The growth depends most strongly on halo mass, with weaker sensitivity to inflowing gas fraction, nuclear size, and seed mass. Gas-inflow-driven SIDM accretion therefore provides an efficient pathway for producing massive black holes in the early Universe.
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