权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Astrophysics Consolidated Grant

天体物理学综合拨款

基本信息

批准号：
ST/S000275/1
负责人：
Rainer Hollerbach
金额：
$ 85.74万
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：
2019
资助国家：
英国
起止时间：
2019 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=ST%2FS000275%2F1
关键词：
Astrophysics Consolidated Grant

项目摘要

Many astrophysical phenomena involve complex interactions between magnetic fields and fluid flows, 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 machines) 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) Relativistic jets emanating from active galactic nuclei, and the physics governing instabilities that eventually develop over sufficiently large distances from their origin.(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) Magnetic and thermal evolution of highly magnetised neutron stars, and how this relates to the bursts and flares observed in such stars.(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磁场和流体流动之间复杂的相互作用，其参数值往往远远超出任何地面实验室实验。我们打算进行一项系统的研究计划，以调查几个天体物理对象中的一些相互作用。我们将利用分析和数值技术的结合（包括应用最先进的数值算法，优化用于大规模并行机器）来获得对这种现象的理解。我们的统一理念是研究这些天体物理对象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/数值结果与天文观测量联系起来。我们将在本提案中讨论的具体现象是：(1)从活动星系核发出的相对论性喷流，以及控制不稳定性的物理学，这些不稳定性最终会在离它们起源足够远的地方发展。(2)恒星和行星的潮汐流及其耗散的能量如何影响太阳系外行星系统和双星的演化。(3)高磁化中子星的磁和热演化，以及这与在这类恒星中观测到的爆发和耀斑之间的关系。(4)太阳系外行星的大气层，以及它们对来自其母恒星的极端不对称加热的反应。