Understanding the role of feedback from supermassive black holes in galaxy formation

了解超大质量黑洞反馈在星系形成中的作用

• 批准号: 341536-2007
• 负责人: McNamara, Brian
• 金额: $ 3.59万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=429700
• 关键词: Understanding; role; feedback; supermassive; black

The Cold Dark Matter model for the formation and evolution of structure in the Universe successfully describes how galaxies and clusters of galaxies are spread throughout the cosmos. However it fails to describe the basic properties of galaxies themselves. Astronomers are beginning to realize that this failure is related to a key piece of missing physics: outflows of matter and energy from supermassive black holes in the nuclei of galaxies. These outflows are difficult to model in part because there are few reliable measurements of the energy they release. The best measurements have emerged from recent X-ray observations of galaxies and galaxy clusters.

宇宙结构形成和演化的冷暗物质模型成功地描述了星系和星系团如何在整个宇宙中分布。然而，它未能描述星系本身的基本性质。天文学家开始意识到，这一失败与一个关键的缺失物理学有关：从星系核中的超大质量黑洞流出的物质和能量。这些外流很难建模，部分原因是对它们释放的能量几乎没有可靠的衡量标准。最好的测量结果来自最近对星系和星系团的X射线观测。