Collaborative Research: Reverberation Mapping with Multi-Object Spectroscopy - from Sloan Digital Sky Survey Reverberation Mapping to the Black Hole Mapper

合作研究：使用多目标光谱进行混响映射 - 从斯隆数字巡天混响映射到黑洞映射器

• 批准号: 2009947
• 负责人: Yue Shen
• 金额: $ 26.4万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-07-01 至 2025-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2009947&HistoricalAwards=false
• 关键词: Collaborative; Research; Reverberation; Mapping; Multi

This project will study the flicker of light from supermassive black holes that linger at the center of most of the big galaxies in the universe. These supermassive black holes weigh more than a million (up to about ten billion) times the mass of the Sun, and the glowing radiation from materials being “fed” into these black holes can outshine the star light from the entire galaxy, allowing these black holes to be observed in the very distant regions of the universe. In this project, astronomers will measure the variations of radiation from these supermassive black holes and how the materials immediately surrounding the black hole “echo” this variability. This measured echo allows astronomers to infer the mass of these monster black holes that are actively growing, and, in turn, help them understand how supermassive black holes form and evolve across cosmic history. In the area of Broader Impacts, the PIs plan to incorporate their research into strong educational and outreach programs at each of their institutions. In particular, these programs include a summer camp for high school girls, centered on data analysis, a black-hole workshop for middle schools, and a new summer bridge program for physics undergraduates from non-traditional backgrounds. These programs will encourage the participation of groups traditionally underrepresented in STEM fields.Supermassive black holes are ubiquitous at the center of massive galaxies in the universe. When they are actively accreting matter to build up their mass, they can produce immense radiation that often outshines the entire galaxy in which these massive black holes reside. This radiation from active supermassive black holes is not constant, but flickers at levels that are measurable with modern astronomical facilities. This project will measure the flicker from thousands of such active supermassive black holes over a five-year period, and the “echoes” from gas clouds immediately surrounding the black hole. These echo measurements will infer the spatial extent of these gas clouds in the vicinity of the black hole, and enable the measurement of the black hole mass. This project will use this technique to measure the masses of active supermassive black holes on an unprecedented industrial scale, most of which are billions of light years away, to understand the cosmic evolution of supermassive black holes and their relationships with their host galaxies.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这个项目将研究徘徊在宇宙中大多数大星系中心的超大质量黑洞发出的光的闪烁。这些超大质量黑洞的质量超过太阳质量的一百万倍（高达约一百亿倍），从被“喂入”这些黑洞的物质发出的发光辐射可以超过整个星系的星星光，使这些黑洞能够在宇宙中非常遥远的区域被观察到。在这个项目中，天文学家将测量这些超大质量黑洞辐射的变化，以及黑洞周围的物质如何“回应”这种变化。这种测量的回声使天文学家能够推断出这些正在积极增长的怪物黑洞的质量，反过来，帮助他们了解超大质量黑洞如何在宇宙历史中形成和演变。 在更广泛的影响领域，PI计划将其研究纳入其每个机构的强有力的教育和推广计划。 特别是，这些计划包括一个高中女生夏令营，集中在数据分析，一个黑洞研讨会的中学，和一个新的夏桥计划的物理本科生从非传统背景。这些计划将鼓励传统上在STEM领域代表性不足的群体参与进来。超大质量黑洞在宇宙中的大质量星系中心无处不在。当它们积极地吸积物质以增加质量时，它们可以产生巨大的辐射，这些辐射通常会超过这些大质量黑洞所在的整个星系。这种来自活跃的超大质量黑洞的辐射并不是恒定的，而是以现代天文设施可以测量的水平闪烁。该项目将在五年内测量数千个这样的活动超大质量黑洞的闪烁，以及黑洞周围气体云的“回声”。这些回波测量将推断黑洞附近这些气体云的空间范围，并能够测量黑洞质量。该项目将使用这种技术以前所未有的工业规模测量活动超大质量黑洞的质量，其中大多数距离我们数十亿光年，了解超大质量黑洞的宇宙演化及其与宿主星系的关系。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查进行评估，被认为值得支持的搜索.

项目成果

A hidden population of high-redshift double quasars unveiled by astrometry

• DOI: 10.1038/s41550-021-01323-1
• 发表时间: 2021-04
• 期刊: Nature Astronomy
• 影响因子: 14.1
• 作者: Yue Shen;Yu-Ching Chen;H. Hwang;Xin Liu;N. Zakamska;M. Oguri;J. I. Li;J. Lazio;Peter Breiding-Peter-Bre

A Sample Bias in Quasar Variability Studies

• DOI: 10.3847/2041-8213/ac1e2e
• 发表时间: 2021-08
• 期刊: The Astrophysical Journal Letters
• 作者: Yue Shen;C. J. Burke

The Sloan Digital Sky Survey Reverberation Mapping Project: UV–Optical Accretion Disk Measurements with the Hubble Space Telescope

• DOI: 10.3847/1538-4357/ac478b
• 发表时间: 2021-05
• 期刊: The Astrophysical Journal
• 作者: Y. Homayouni;Megan R. Sturm;J. Trump;K. Horne;C. Grier;Yue Shen;W. Brandt;G. F. Alvarez;P. Hall;L. Ho;J. I. Li;Mouyuan Sun;D. Schneider

Extreme Variability and Episodic Lifetime of Quasars

• DOI: 10.3847/1538-4357/ac1ce4
• 发表时间: 2021-08
• 期刊: The Astrophysical Journal
• 作者: Yue Shen

A characteristic optical variability time scale in astrophysical accretion disks

• DOI: 10.1126/science.abg9933
• 发表时间: 2021-08
• 期刊: Science
• 影响因子: 56.9
• 作者: C. J. Burke;Yue Shen;O. Blaes;C. Gammie;K. Horne;Yan-Fei Jiang;Xin Liu;I. McHardy;C. Morgan;S. Scaringi;Qian Yang