RUI: Computational Gravitational-Wave Research for the Era of First Observations

RUI：首次观测时代的计算引力波研究

• 批准号: 1606522
• 负责人: Geoffrey Lovelace
• 金额: $ 13.5万
• 依托单位: CSU Fullerton Auxiliary Services Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-07-01 至 2019-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1606522&HistoricalAwards=false
• 关键词: RUI; Computational; Gravitational; Wave; Research

A century after Einstein predicted their existence, the Laser Interferometer Gravitational-Wave Observatory (LIGO) has made the first observation of gravitational waves--ripples of warped space and time. The waves came from a pair of merging black holes over a billion light years away. This award will help scientists to observe as many gravitational waves as possible while learning as much as possible about the waves' astronomical sources. Specifically, this award supports a research program that uses supercomputers to predict the gravitational waves from merging black holes and neutron stars and to study the most important source of noise limiting LIGO's reach. Through their participation in this program, students at California State University Fullerton, a primarily undergraduate-serving and Hispanic-serving institution, will learn transferable skills in research and computing while playing important roles in the inauguration of a new era in astronomy. The imminent gravitational-wave discoveries could dramatically change our understanding of the universe.This award renews support for California State University Fullerton's computational gravitational-wave research program. The PI and undergraduate and master's-level researchers will address two crucial challenges in computational gravitational-wave physics using high performance computing. First, they will use the Spectral Einstein Code (SpEC) to model merging black holes and neutron stars--the most promising sources for Advanced LIGO--focusing on the challenging but astrophysically important case of rapid black-hole spins. The resulting simulated gravitational waveforms will help maximize LIGO's reach, in part by leading to better approximate waveform models for future LIGO searches; the simulations will also reveal how warped spacetime behaves under extreme conditions never before modeled. Second, the PI and student researchers will use high-performance computing to model thermal noise--one of the most significant fundamental limits to detectors' astrophysical sensitivities--focusing on a highly promising avenue for improvement, crystalline mirror materials. Leveraging these highly sophisticated techniques will allow for breakthroughs in the understanding of the fluctuations in complex elastic structures, including mirrors with crystalline coatings. These new insights will allow for substantial improvements in the thermal noise of high precision measurements, currently a limiting noise source for gravitational-wave detection, atomic clocks, and inertial sensing.

在爱因斯坦预言引力波存在的世纪后，激光干涉引力波天文台（LIGO）首次观测到了引力波--扭曲的空间和时间的涟漪。这些波来自10亿光年外的一对黑洞的合并。该奖项将帮助科学家观察尽可能多的引力波，同时尽可能多地了解波的天文来源。具体来说，该奖项支持一项研究计划，该计划使用超级计算机来预测黑洞和中子星合并产生的引力波，并研究限制LIGO影响范围的最重要噪声源。通过参与该计划，加州州立大学富勒顿分校（一所主要为本科生和西班牙裔服务的机构）的学生将学习研究和计算方面的可转移技能，同时在天文学新时代的开创中发挥重要作用。即将到来的引力波发现可能会极大地改变我们对宇宙的理解。这个奖项再次支持加州州立大学富勒顿的计算引力波研究计划。PI和本科和硕士水平的研究人员将使用高性能计算解决计算引力波物理学中的两个关键挑战。首先，他们将使用光谱爱因斯坦代码（SpEC）来模拟合并黑洞和中子星-高级LIGO最有前途的来源-专注于具有挑战性但在天体物理学上重要的快速黑洞旋转案例。由此产生的模拟引力波形将有助于最大限度地扩大LIGO的覆盖范围，部分原因是为未来的LIGO搜索提供更好的近似波形模型;模拟还将揭示扭曲时空在以前从未建模的极端条件下的行为。 其次，PI和学生研究人员将使用高性能计算来模拟热噪声-探测器天体物理灵敏度最重要的基本限制之一-专注于一个非常有前途的改进途径，晶体镜面材料。利用这些高度复杂的技术将使人们对复杂弹性结构波动的理解取得突破，包括具有晶体涂层的镜子。这些新的见解将允许大幅改善高精度测量的热噪声，目前这是引力波探测，原子钟和惯性传感的限制噪声源。

项目成果

Measuring the properties of nearly extremal black holes with gravitational waves

• DOI: 10.1103/physrevd.98.044028
• 发表时间: 2018-04
• 期刊: Physical Review D
• 影响因子: 5
• 作者: K. Chatziioannou;G. Lovelace;M. Boyle;M. Giesler;D. Hemberger;R. Katebi;Lawrence E. Kidder;H. Pfeiffer;M. Scheel;B. Szil'agyi

Numerical-relativity surrogate modeling with nearly extremal black-hole spins

具有近极值黑洞自旋的数值相对论替代模型

• DOI: 10.1088/1361-6382/acb3a7
• 发表时间: 2023
• 期刊: Classical and Quantum Gravity
• 影响因子: 3.5
• 作者: Walker, Marissa;Varma, Vijay;Lovelace, Geoffrey;Scheel, Mark A
• 通讯作者: Scheel, Mark A

Assessing the energetics of spinning binary black hole systems

评估旋转双黑洞系统的能量学

• DOI: 10.1103/physrevd.98.104057
• 发表时间: 2018
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Ossokine, Serguei;Dietrich, Tim;Foley, Evan;Katebi, Reza;Lovelace, Geoffrey
• 通讯作者: Lovelace, Geoffrey

Detection and characterization of spin-orbit resonances in the advanced gravitational wave detectors era

先进引力波探测器时代自旋轨道共振的探测和表征

• DOI: 10.1103/physrevd.98.083014
• 发表时间: 2018
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Afle, Chaitanya;Gupta, Anuradha;Gadre, Bhooshan;Kumar, Prayush;Demos, Nick;Lovelace, Geoffrey;Choi, Han Gil;Lee, Hyung Mok;Mitra, Sanjit;Boyle, Michael
• 通讯作者: Boyle, Michael

GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral

• DOI: 10.1103/physrevlett.119.161101
• 发表时间: 2017-10-16
• 期刊: PHYSICAL REVIEW LETTERS
• 影响因子: 8.6
• 作者: Abbott, B. P.;Abbott, R.;Zweizig, J.
• 通讯作者: Zweizig, J.