Probing the Central Engine in Active Galactic Nuclei

探测活跃星系核的中央引擎

• 批准号: 0205964
• 负责人: Bradley Peterson
• 金额: --
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-07-01 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0205964&HistoricalAwards=false
• 关键词: Probing; Central; Engine; Active; Galactic

AST 0205964Peterson, B MThis program will explore the very inner structure of active galactic nuclei, to determine masses of the central black holes using continuum and emission-line variability to probe the physical processes in the accretion-disk/broad-line region environment. The current program in progress to measure the bulge velocity dispersions in the host galaxies of active galactic nuclei will be expanded to test whether the relationship between the black-hole mass and bulge velocity dispersion is the same for active galaxies and quiescent galaxies. This relationship will be used to estimate masses for local AGNs for which reverberation masses have not been measured, concentrating initially on radio-loud AGNs and narrow-line Seyfert 1 galaxies, objects that are not well represented in reverberation-mapped samples. Optical ground-based support for multiwavelength monitoring programs will be provided, in particular a long-standing program of optical spectrophotometry on the well-studied Seyfert 1 galaxy NGC 5548.

他的计划将探索活动星系核的内部结构，利用连续谱和发射线变异性来确定中心黑洞的质量，以探索吸积盘/宽线区域环境中的物理过程。目前正在进行的测量活动星系核宿主星系中膨胀速度弥散的计划将扩大，以测试活动星系和静止星系的黑洞质量和膨胀速度弥散之间的关系是否相同。这一关系将用于估计尚未测量混响质量的局部活动星系核的质量，最初集中在射电发出的活动星系核和窄线塞弗特1星系，这些天体在混响映射样本中没有很好地代表。将为多波长监测项目提供光学地面支持，特别是在经过充分研究的Seyfert 1星系NGC 5548上的长期光学分光光度测定项目。