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Astrophysics Consolidated Grant

天体物理学综合拨款

基本信息

批准号：
ST/W000873/1
负责人：
Adrian Barker
金额：
$ 103.24万
依托单位：
University of Leeds
依托单位国家：
英国
项目类别：
Research Grant
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=ST%2FW000873%2F1
关键词：
Astrophysics Consolidated Grant

项目摘要

Many astrophysical phenomena involve complex fluid flows and interactions between flows and magnetic fields, often at parameter values far beyond any terrestrial laboratory experiments. We intend to undertake a systematic programme of research to investigate some of these interactions in several astrophysical objects. We shall utilise a combination of analytical and numerical techniques (including the application of state-of-the-art numerical algorithms optimised for use on massively parallel computer facilities) to gain an understanding of such phenomena. Our unifying philosophy is to investigate the fundamental physical interactions in these astrophysical objects and to use expertise gained in one area in order to make progress in other situations with similar underlying dynamics. In all cases we also intend to connect our theoretical/numerical results with astronomically observable quantities. The specific phenomena that we shall address in this proposal are:(1) Magnetic and thermal evolution of highly magnetised neutron stars, and how this relates to the X-ray emissions observed in such stars.(2) Tidal flows in stars and planets, and how the energy dissipated by them affects the evolution of extra-solar planetary systems and binary stars.(3) Dynamics and radiation of highly magnetised relativistic plasma.(4) The atmospheres of extra-solar planets, and how they respond to extremely asymmetric heating from their parent stars.

许多天体物理现象涉及复杂的流体流动以及流动与磁场之间的相互作用，其参数值通常远远超出任何地面实验室实验。我们打算开展一项系统的研究计划，以调查几个天体物理物体中的一些相互作用。我们将利用分析和数值技术的组合（包括应用针对大规模并行计算机设施而优化的最先进的数值算法）来了解此类现象。我们的统一理念是研究这些天体物理物体的基本物理相互作用，并利用在一个领域获得的专业知识，以便在具有类似潜在动力学的其他情况下取得进展。在所有情况下，我们还打算将我们的理论/数值结果与天文可观测量联系起来。我们将在本提案中讨论的具体现象是：（1）高度磁化中子星的磁和热演化，以及这与在此类恒星中观察到的X射线发射有何关系。（2）恒星和行星中的潮汐流，以及它们耗散的能量如何影响太阳系外行星系统和双星的演化。（3）高度磁化相对论等离子体的动力学和辐射。（4）太阳系外行星的大气层，以及它们如何应对来自母星的极其不对称的加热。