EXTREME PHYSICS AROUND BLACK HOLES: UNDERSTANDING ACCRETION-DISK PHYSICS AT THE EDGE OF THE BLACK-HOLE EVENT HORIZON

黑洞周围的极端物理：了解黑洞事件视界边缘的吸积盘物理

• 批准号: 2749923
• 金额: --
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2749923
• 关键词: EXTREME; PHYSICS; AROUND; BLACK; HOLES

Black holes in our Galaxy have masses between 5 and 15 times that of our Sun, and are formed when a massive star explodes in a Supernova. A black hole is so massive and confined in such a small volume in space, that not even light can escape its gravitational attraction. Fortunately, some black holes are in binary systems with a star similar to, or smaller than our Sun. If the black hole and the companion star are close enough, the strong gravity produced by the black hole will slowly "suck" gas from its companion, deforming it into a pear-shape star. The gas pulled off by the black hole does not fall directly into it, but swirls in like bath water around a plug-hole, forming a disk of gas which astronomers call accretion disk.What are the fundamental physics that rule accretion disks? What are the physical ingredients needed to produce ultra-fast winds and jets? The PhD student will join the group of high-energy astrophysics in order to tackle some of the most fundamental questions of accretion disk physics. To do so, the student will use high-time resolution data from NASA's newest X-ray instrument "Neutron star Interior Composition Explorer", in combination with data from state-of-the-art optical, infrared and Radio facilities.

银河系中的黑洞质量是太阳的 5 到 15 倍，是在超新星中大质量恒星爆炸时形成的。黑洞质量如此之大，并且被限制在如此小的空间体积内，甚至连光也无法逃脱它的引力。幸运的是，一些黑洞位于双星系统中，其恒星类似于或小于我们的太阳。如果黑洞和伴星距离足够近，黑洞产生的强大引力会慢慢“吸走”伴星的气体，使其变形为梨形恒星。被黑洞拉出的气体不会直接落入其中，而是像洗澡水一样围绕塞孔旋转，形成一个气体盘，天文学家称之为吸积盘。统治吸积盘的基本物理原理是什么？产生超快的风和射流需要哪些物理成分？博士生将加入高能天体物理学小组，以解决吸积盘物理学的一些最基本的问题。为此，学生将使用来自 NASA 最新 X 射线仪器“中子星内部成分探测器”的高时间分辨率数据，并结合来自最先进的光学、红外和无线电设施的数据。