Active Galactic Nuclei and the "Grand Unification" with Galaxies

活跃星系核和星系的“大统一”

• 批准号: 0407295
• 负责人: C. Megan Urry
• 金额: --
• 依托单位: Yale University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0407295&HistoricalAwards=false
• 关键词: Active; Galactic; Nuclei; Grand; Unification

AST-0407295UrryThis project is an investigation of Active Galactic Nuclei (AGN) and their host galaxies, with the aim of understanding the AGN-galaxy connection. Host galaxies will be compared with their non-active counterparts, using stellar velocity dispersions and sub-arcsecond imaging. Different methods of estimating central black hole mass (including reverberation mapping) will be compared, in work that should increase the present sample size by an order of magnitude. Mass accretion rates will be estimated from AGN spectra, and the relation of these rates and of the black hole mass to other AGN properties will be studied. This should allow the construction of a self-consistent evolutionary picture for black holes and galaxies combined.The study involves student research, comprising the major part of one graduate thesis, and since the public interest in black holes remains high, the results can be expected to have noticeable impact on a non-specialist audience.

这个项目是对活动星系核（AGN）及其宿主星系的调查，目的是了解AGN-星系之间的联系。利用恒星速度色散和亚弧秒成像技术，将宿主星系与非活跃星系进行比较。将比较估计中心黑洞质量的不同方法（包括混响映射），这将使目前的样本量增加一个数量级。根据AGN谱估计质量吸积率，并研究这些吸积率和黑洞质量与AGN其他性质的关系。这应该可以为黑洞和星系的结合构建一个自洽的演化图景。这项研究涉及学生的研究，包括一篇研究生论文的主要部分，由于公众对黑洞的兴趣仍然很高，预计研究结果将对非专业观众产生显著影响。