Study of the spectral energy distributions and variability of a large X-ray selected sample of AGN

研究活动星系核大型 X 射线选定样本的光谱能量分布和变异性

• 批准号: 2114198
• 金额: --
• 依托单位: Durham University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2114198
• 关键词: Study; spectral; energy; distributions; variability

Building on three previous successful PhD projects, this work will very substantially increase the sample size of AGN(to over 700). Thereby it will be possible, for the first time, to investigate the importance of key physical parameters such as Eddington ratio and black hole spin, on the observed multi-frequency spectral energy distributions. In addition, and complementary to this, the student will use variability properties to constrain the emission mechanisms involved. The outcomes of these studies will be interpreted in the context of state-of-the-art accretion disc models developed here in Durham. It is anticipated that proposals to obtain new observations of selected AGN from the sample will be made to both satellite facilities eg. the Hubble and XMM-Newton, and to large ground based telescopes such as the VLT and the Gemini 8m's,to which we have access by virtue of existing collaborations.

在以前三个成功的博士项目的基础上，这项工作将大大增加AGN的样本量（超过700）。因此，这将是可能的，第一次，调查的重要性，如爱丁顿比和黑洞自旋的关键物理参数，对所观察到的多频谱能量分布。此外，作为补充，学生将使用可变性属性来约束所涉及的发射机制。这些研究的结果将被解释在达勒姆这里开发的最先进的吸积盘模型的背景下。预计将向这两个卫星设施提出从样本中获得选定活动星系核新观测结果的建议，如：哈勃和XMM-牛顿，以及大型地面望远镜，如VLT和双子座8米，我们可以通过现有的合作访问。