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Astrophysics at Southampton

南安普敦天体物理学

基本信息

批准号：
ST/V001000/1
负责人：
Sebastian Hoenig
金额：
$ 346.77万
依托单位：
University of Southampton
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2021
资助国家：
英国
起止时间：
2021 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=ST%2FV001000%2F1
关键词：
Astrophysics Southampton

项目摘要

All aspects of our research programme relate to the physics of compact objects: the supernova explosions that create and destroy them, the accretion that makes them luminous, the outflows that accompany disk-accreting systems, and the effect they have on their environment. We wish to understand the physics behind these phenomena and exploit them, especially for cosmology. We have a special interest in time-domain astronomy as a tool for pursuing these goals. Our interests cover a wide range of scales, from neutron stars to active galactic nuclei. The group is well balanced: our interests span a broad set of topics, but with overlap that allows effective collaboration.Here, we request support for projects across the range of topics outlined above. On Galactic/stellar scales, we will exploit state-of-the-art astrometric and imaging surveys to study the birth and growth of black holes (Project 1). We will also use simultaneous fast X-ray, UV and optical observations to shed new light on accreting X-ray binaries (Project 4). Moreover, we will produce the most sensitive time-domain hard X-ray "meta-survey", by synthesizing data from 3 separate missions for the first time (Project 5). Finally, we will uncover the population of black-hole ultraluminous X-ray sources, the local analogues of super-critically accreting supermassive black holes (SMBH, Project 8).On extra-galactic scales, we will self-consistently model line-driven disk winds in AGN for the first time and hence develop a physically motivated feedback prescription (Project 2). We will also use multi-wavelength time-domain observations of AGN to understand the disk geometry and emission processes close to the central engine (Project 3). In addition, we will use 3D radiation hydrodynamical simulations to address the ``final parsec problem'' for merging SMBHs (project 6). On cosmological scales, we will exploit our leadership of the 4MOST/TiDES survey to build a next-generation SN Ia Hubble Diagram (Project 7). We will also shed new light on the co-evolution of SMBHs and their hosts, by identifying the interaction between feedback and mergers in creating the M_BH vs sigma relation, and by clarifying the roles of internal and external processes (Project 9).Given our long-standing commitment to public engagement with research (PER), we will also develop and deliver high-impact PER activities associated specifically with four projects (Projects 1, 3, 7 and 9). These activities will range from converting astrophysical data into sound (in order to engage with visually impaired audiences) to a high-quality full-dome video illustrating how X-ray, radio, UV and optical observations allow us to "see" the environment around SMBHs.

我们研究计划的所有方面都与致密天体的物理学有关：产生和摧毁它们的超新星爆炸、使它们发光的吸积、伴随吸积盘系统的流出，以及它们对环境的影响。我们希望了解这些现象背后的物理学并加以利用，特别是对于宇宙学。我们对时域天文学特别感兴趣，将其作为实现这些目标的工具。我们的兴趣涵盖广泛的尺度，从中子星到活动星系核。该小组非常平衡：我们的兴趣涵盖广泛的主题，但有重叠，可以进行有效的协作。在此，我们请求对上述主题范围内的项目提供支持。在银河/恒星尺度上，我们将利用最先进的天体测量和成像调查来研究黑洞的诞生和增长（项目1）。我们还将同时使用快速 X 射线、紫外线和光学观测，为吸积 X 射线双星提供新的线索（项目 4）。此外，我们将首次综合来自 3 个独立任务的数据（项目 5），进行最灵敏的时域硬 X 射线“元调查”。最后，我们将揭示黑洞超发光 X 射线源的数量，这是超临界吸积超大质量黑洞的局部类似物（SMBH，项目 8）。在银河系外尺度上，我们将首次对 AGN 中的线驱动盘风进行自洽建模，从而开发出物理驱动的反馈处方（项目 2）。我们还将利用 AGN 的多波长时域观测来了解中央引擎附近的盘几何结构和发射过程（项目 3）。此外，我们将使用 3D 辐射流体动力学模拟来解决合并超大质量黑洞的“最终秒差距问题”（项目 6）。在宇宙学尺度上，我们将利用我们在 4MOST/TiDES 巡天中的领导地位来构建下一代 SN Ia 哈勃图（项目 7）。我们还将通过确定反馈和合并之间在创建 M_BH 与 sigma 关系时的相互作用，并阐明内部和外部流程的作用（项目 9），对 SMBH 及其东道国的共同进化提供新的认识。鉴于我们对公众参与研究 (PER) 的长期承诺，我们还将开发和提供与四个项目（项目 1、3、7 和 9）具体相关的高影响力 PER 活动。这些活动的范围包括将天体物理数据转换为声音（以便与视力受损的观众互动）到高质量的全圆顶视频，说明 X 射线、无线电、紫外线和光学观测如何让我们“看到”超大质量黑洞周围的环境。