Astrophysics Consolidated Grant

天体物理学综合拨款

• 批准号: ST/N000676/1
• 负责人: Rainer Hollerbach
• 金额: $ 48.01万
• 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: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FN000676%2F1
• 关键词: Astrophysics; Consolidated; Grant

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) The dynamics of relativistic magnetized flows, such as pulsar wind nebulae.(2) The magnetic and thermal evolution of highly magnetized neutron stars.(3) Tidal interactions in rotating stars and extra-solar planets.

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)相对论磁化流的动力学，例如脉冲星风星云。(2)高磁化中子星的磁性和热演化。(3)旋转恒星和系外行星的潮汐相互作用。

项目成果

Modelling neutron star magnetic fields

中子星磁场建模

• DOI: 10.1093/astrogeo/aty235
• 发表时间: 2018
• 期刊: Astronomy & Geophysics
• 影响因子: 0.8
• 作者: Gourgouliatos K

Generalised quasilinear approximation of the helical magnetorotational instability

螺旋磁旋转不稳定性的广义拟线性近似

• DOI: 10.1017/s0022377816000556
• 发表时间: 2016
• 期刊: Journal of Plasma Physics
• 影响因子: 2.5
• 作者: Child A

Relativistic tearing and drift-kink instabilities in two-fluid simulations

• DOI: 10.1093/mnras/stw384
• 发表时间: 2016-02
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: M. Barkov;S. Komissarov

Axisymmetric pulse train solutions in narrow-gap spherical Couette flow

• DOI: 10.1016/j.physd.2017.02.009
• 发表时间: 2016-11
• 期刊: Physica D: Nonlinear Phenomena
• 作者: A. Child;Rainer Hollerbach;Evy Kersal'e

Reconfinement and Loss of Stability in Jets from Active Galactic Nuclei

活动星系核喷流的重新约束和稳定性丧失

• DOI: 10.48550/arxiv.1806.05683
• 发表时间: 2018
• 作者: Gourgouliatos K