标题： 超大质量黑洞双星在超轻暗物质中的研究 显示英文标题

标题： Supermassive Black Hole Binaries in Ultralight Dark Matter

摘要： 我们研究了超大质量黑洞（SMBH）双星的演化以及它们的合并是否可能因超轻暗物质（ULDM）的存在而得到促进。当ULDM是一个星系的主要暗物质（DM）成分时，它的波动性质使得在整个星系晕中形成大量的准粒子。在这里，我们展示了准粒子与SMBH双星之间的单次相遇可以有效地从双星系统中提取能量和角动量。ULDM相对较短的相干时间提供了准粒子的稳态群体，从而为最终解析“最后秒差距问题”提供了一种潜在解决方案。此外，我们证明，在恒星存在的条件下，ULDM准粒子也可以作为大规模扰动来增强局部恒星弛豫率，高效地补充恒星损失锥，并因此解决最终的秒差距问题。 显示英文摘要

摘要： We investigate the evolution of supermassive black hole (SMBH) binaries and the possibility that their merger is facilitated by ultralight dark matter (ULDM). When ULDM is the main dark matter (DM) constituent of a galaxy, its wave nature enables the formation of massive quasiparticles throughout the galactic halo. Here we show that individual encounters between quasiparticles and a SMBH binary can lead to the efficient extraction of energy and angular momentum from the binary. The relatively short coherence time of ULDM provides a steady-state population of massive quasiparticles, and consequently a potential solution to the final parsec problem. Furthermore, we demonstrate that, in the presence of stars, ULDM quasiparticles can also act as massive perturbers to enhance the stellar relaxation rate locally, replenish the stellar loss cone efficiently, and consequently resolve the final parsec problem.