恒星质量双黑洞并合在活动星系核吸积盘中的电磁对应体：理论模型与观测现状
Electromagnetic Counterparts of Stellar-mass Binary Black Hole Mergers in AGN Accretion Disks: Theoretical Models and Observational Status
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中文总结 AI 辅助
本文综述了活动星系核吸积盘中恒星质量双黑洞并合的电磁对应体研究，总结其发生证据、辐射机制与观测现状，并探讨未来多信使观测前景。
中文摘要 AI 辅助
双中子星并合事件GW170817及其电磁对应体的发现标志着多信使引力波天文学时代的开始。相比之下，双黑洞（BBH）并合——迄今为止探测到的引力波源中的大多数——通常被认为在电磁波段是暗弱的。然而，如果双黑洞并合发生在活动星系核（AGN）吸积盘的稠密气体环境中，并合黑洞与周围气体之间的相互作用可能产生跨多个波长的电磁辐射。因此，活动星系核吸积盘可能为研究双黑洞并合及其天体物理环境提供一个天然的多信使实验室。一个关键问题是，这种情景是否得到当前观测的支持，以及相关的电磁特征是否足够独特且可探测。在这篇综述中，我们总结了双黑洞并合在活动星系核吸积盘中的当前理论和观测现状，重点关注其发生的证据、电磁发射的物理机制和预期特征，以及对候选对应体的搜寻。我们还讨论了在识别和确认这些关联方面的主要挑战，以及当前和未来多波长设施进行未来多信使观测的前景。
英文摘要
The discovery of the binary neutron star merger GW170817 and its electromagnetic counterparts marked the beginning of the era of multimessenger gravitational-wave astronomy. In contrast, binary black hole (BBH) mergers, which constitute the majority of gravitational-wave sources detected to date, are generally expected to be electromagnetically dark. However, if BBH mergers occur within the dense gaseous environments of active galactic nucleus (AGN) accretion disks, interactions between the merging black holes and surrounding gas may produce electromagnetic emission across multiple wavelengths. AGN disks may therefore provide a natural multimessenger laboratory for studying BBH mergers and their astrophysical environments. A key question is whether such a scenario is supported by current observations and whether the associated electromagnetic signatures are sufficiently distinctive and detectable. In this review, we summarize the current theoretical and observational status of BBH mergers in AGN accretion disks, focusing on the evidence for their occurrence, the physical mechanisms and expected signatures of electromagnetic emission, and searches for candidate counterparts. We also discuss the major challenges in identifying and confirming these associations and the prospects for future multimessenger observations with current and forthcoming multiwavelength facilities.
发表机构
- University of Science and Technology of China（中国科学技术大学）
- Institute of High Energy Physics, Chinese Academy of Sciences（中国科学院高能物理研究所）
- Guizhou University（贵州大学）
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