利用活动星系核的紫外协同天体物理学
Synergistic Astrophysics in the Ultraviolet using Active Galactic Nuclei
摘要：
包括多个科学目标的观测计划将提高NASA下一个紫外/可见光任务的生产力。研究活动星系核（AGN）对于理解黑洞如何吸积物质，如何在宇宙时间中生长，以及如何影响它们的宿主星系具有本质上的重要性。同时，活动星系核明亮的紫外连续谱也是研究星系际介质（IGM）、单个星系的环星系介质（CGM）以及银河系的星际介质（ISM）和晕中前景气体的理想背景光源。一个精心挑选的活动星系核样本可以作为多种光谱研究的观测骨干，包括定量测量活动星系核的外流，它们的吸积盘的结构，以及中心黑洞的质量。
英文摘要：
Observing programs comprising multiple scientific objectives will enhance the productivity of NASA's next UV/Visible mission. Studying active galactic nuclei (AGN) is intrinsically important for understanding how black holes accrete matter, grow through cosmic time, and influence their host galaxies. At the same time, the bright UV continuum of AGN serves as an ideal background light source for studying foreground gas in the intergalactic medium (IGM), the circumgalactic medium (CGM) of individual galaxies, and the interstellar medium (ISM) and halo of the Milky Way. A well chosen sample of AGN can serve as the observational backbone for multiple spectroscopic investigations including quantitative measurements of outflows from AGN, the structure of their accretion disks, and the mass of the central black hole.
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