LIGO Data Analysis and Gravitational Wave Astronomy

LIGO 数据分析和引力波天文学

• 批准号: 9800111
• 负责人: Lee Finn
• 金额: $ 39.86万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-08-15 至 2002-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9800111&HistoricalAwards=false
• 关键词: LIGO; Data; Analysis; Gravitational; Wave

***9800111FinnThis program addresses research in gravitational wave astronomy--the interpretation of gravitational wave observations that are anticipated to begin in the next several years--in addition to data analysis questions of direct relevance to the LIGO experimental gravitational wave detection effort. It is anticipated that the latter research efforts will be carried out in the context of the LIGO Science Collaboration. This research if of direct relevance to include development of: "science benchmarks" for the uniform assessment of alternative detector designs in terms of target science; techniques for generating extensible pseudo-random sequences with Gaussian statistics and a prescribed power spectral density that may include arbitrarily sharp spectral features (for simulating the Gaussian-stationary noise component of the LIGO receiver); diagnostics techniques for identifying and characterizing the statistical properties of non-Gaussian stationary and non-stationary instrumental noise, data analysis algorithms that exploit fully the information present in the correlated output of a network of independent gravitational wave detectors, data analysis algorithms for the identification of stochastic signals using maximum likelihood tests, data analysis algorithms capable of identifying burst sources or unknown origin, and Bayesian data analysis algorithms as alternatives to the Frequentist algorithms that have already been explored in the literature.Gravitational wave astronomy research problems addressed here focus on source calculations for stochastic signals arising from non-exotic sources; interpretation of observations of generic burst sources in terms of astrophysical sources; the use of binary inspiral observations as a census of the distribution of component masses in compact binaries and as a yardstick by which the Hubble constant and other cosmological parameters may be measured; and the use of gravitational wave observations in LIGO to test predictions of alternative theories of gravity regarding the "spin" of the graviton.***

* 9800111芬兰计划致力于引力波天文学的研究--对引力波观测的解释，预计将在未来几年开始--除了与LIGO实验引力波探测工作直接相关的数据分析问题。 预计后者的研究工作将在LIGO科学合作的背景下进行。 这项研究的直接相关性，包括发展：“科学基准”的统一评估替代探测器设计的目标科学;技术，产生可扩展的伪随机序列与高斯统计和规定的功率谱密度，可能包括任意尖锐的频谱特征（用于模拟LIGO接收器的高斯平稳噪声分量）;用于识别和表征非高斯平稳和非平稳仪器噪声的统计特性的诊断技术，充分利用独立引力波探测器网络的相关输出中存在的信息的数据分析算法，使用最大似然检验识别随机信号的数据分析算法，能够识别爆发源或未知起源的数据分析算法，和贝叶斯数据分析算法作为替代的频率算法，已经在文献中探讨。引力波天文学研究问题，这里集中在源计算由非奇异源产生的随机信号;从天体物理学源的角度解释一般爆发源的观测结果;使用双星内旋观测结果作为致密双星中组成质量分布的普查，并作为测量哈勃常数和其他宇宙学参数的尺度;以及利用LIGO中的引力波观测来检验关于引力子“自旋”的其他引力理论的预测。