Nonlinear gravity and multimessenger signals in the era of Gravitational Wave Astronomy

引力波天文学时代的非线性重力和多信使信号

• 批准号: RGPIN-2017-04046
• 负责人: Lehner, Luis
• 金额: $ 5.1万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=691550
• 关键词: Nonlinear; gravity; multimessenger; signals; era

The recent detection of gravitational waves heralds a revolution in our understanding of gravity and astrophysics. Gravitational wave astronomy is now a new and exciting field. This field will bring revolution that will help elucidate enigmatic objects like black holes and neutron stars, decipher their connection to spectacularly energetic astrophysical events and test General Relativity at unprecedented levels. My research program is focused on all these opportunities, bringing a multidisciplinary approach to both examine particular opportunities and critically examine novel lines of research. ******This proposal contains an ambitious 5-year plan to take advantage of amazing observational opportunities to explore strongly gravitating systems. During this proposal I will concentrate on two main driving topics which, in turn, contain several activities making contact with observational and foundational goals. These fronts are intertwined and provide an excellent ground to focus on timely objectives while expanding future horizons for gravitational research and observations.******1) Strong gravity and astrophysical questions. I will use my expertise in strongly gravitating systems to study multimessenger signals from stellar compact binary mergers as well as possible electromagnetic signals produced by tidal disruption events or accretion by supermassive black holes. A main driving goal in this front will be to produce predictions that can guide observational efforts as well as analysis of possible signals. To this end, I will exploit computational simulations enabled through our advanced computational infrastructure for non-vacuum compact binaries as well as a new approach to study supermassive black hole interacting with matter.******2) Strong gravity and fundamental questions. I will examine gravitational wave signature from relevant systems described by extensions to General Relativity and the likelihood of detecting potential departures. As well, I will study implications of non-linear interactions in the possibility of turbulence in gravitational fields and the role that inverse-energy cascade can have in addressing well posedness questions of most extensions to General Relativity.******The young researchers working in my program will participate in the groundbreaking science brought forward by the new era of gravitational wave astronomy. They will benefit from extensive academic training which contemplates breath and depth. They will acquire unique mathematical and computer skills, develop analytic creative thinking and encouraged to take leadership roles. Our work will impact various physical disciplines and can help revolutionize our understanding of gravity and astrophysical systems.

最近对引力波的探测预示着我们对引力和天体物理学的理解将发生革命。引力波天文学现在是一个新的和令人兴奋的领域。这一领域将带来革命，有助于阐明黑洞和中子星等神秘物体，破译它们与异常活跃的天体物理事件的联系，并以前所未有的水平测试广义相对论。 我的研究计划是集中在所有这些机会，带来了多学科的方法，既检查特定的机会，并严格审查新的研究线。* * 该提案包含一个雄心勃勃的5年计划，利用惊人的观测机会探索强引力系统。在这个建议中，我将集中在两个主要的驱动主题上，这两个主题又包含了几个与观察和基础目标相联系的活动。这些前沿交织在一起，为关注及时的目标提供了一个很好的基础，同时扩大了引力研究和观测的未来视野。1)强引力和天体物理学问题。我将利用我在强引力系统方面的专业知识，研究来自恒星紧凑型双星合并的多信使信号，以及由潮汐破裂事件或超大质量黑洞吸积产生的电磁信号。这方面的一个主要驱动目标将是产生预测，以指导观测工作以及对可能信号的分析。为此，我将利用我们先进的计算基础设施对非真空紧凑双星进行计算模拟，以及研究超大质量黑洞与物质相互作用的新方法。2)强引力和基本问题。我将研究由广义相对论的扩展所描述的相关系统的引力波特征，以及检测潜在偏离的可能性。同时，我将研究非线性相互作用在引力场湍流可能性中的含义，以及逆能量级联在解决广义相对论大多数扩展的适定性问题中的作用。在我的项目中工作的年轻研究人员将参与引力波天文学新时代带来的开创性科学。他们将受益于广泛的学术培训，其中考虑呼吸和深度。他们将获得独特的数学和计算机技能，发展分析创造性思维，并鼓励他们发挥领导作用。我们的工作将影响各种物理学科，并有助于彻底改变我们对引力和天体物理系统的理解。