Instrument development and data analysis in LIGO

LIGO 仪器开发和数据分析

• 批准号: 0605496
• 负责人: Gabriela Gonzalez
• 金额: $ 111万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-08-01 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0605496&HistoricalAwards=false
• 关键词: Instrument; development; data; analysis; LIGO

The Laser Interferometer Gravitational-wave Observatory (LIGO) consists of 4 km baseline detectors in Livingston, Louisiana, and Hanford, Washington, and an additional 2 km detector in Hanford. LIGO's operating principle is to use precision laser interferometry to measure the relative motion of seismically-isolated test mass mirrors due to the extremely small forces from gravitational waves (GW's) emitted by distant astrophysical events. These waves have not yet been directly observed. Louisiana State University (LSU) is located approximately 40 km from LIGO Livingston (LLO) and has a long-term collaborative relationship with LIGO as a member of the LIGO ScientificCollaboration (LSC). The LIGO data are being analyzed by the LSU group, as part of the LSC, for GW signals from pairs of black holes or neutron stars whose orbits spiral in towards each other and coalesce, and for signals from other sources that produce short-duration bursts. The group's work also includes the physical measurements and data analysis necessary to provide calibration and data quality information that is necessary for astrophysical source searches. Research, development, and prototyping of a seismic isolation system for Advanced LIGO, an upgraded version of the LIGO Observatory which could detect several sources per week, is also being carried out at various LSC facilities, with critical LSU group involvement. Finally, a conceptual design of a tilt measurement system necessary for high duty cycle of the Advanced LIGO detectors is being studied.In a broad context, these activities involve LSU faculty, postdocs, graduate students and undergraduates at LIGO, bringing LSU people the benefits of working with experienced LIGO and LSC scientists, and with apparatus that allows an excellent possibility of significant scientific discovery. The LSU group has been involved in several projects to present the science ofgravitational waves to the general public, and the group will keep up the effort to take advantages of, and create, opportunities for outreach. LSU shares its libraries, networking facilities, and workshops with LIGO. LIGO personnel participate the LSU Physics and Astronomy department's colloquia and astrophysics discussion groups, and often work directly with our students. This close and extensive relationship between LIGO and our nearby research university is expected to be strengthened with continued collaboration.

激光干涉引力波天文台 (LIGO) 由位于路易斯安那州利文斯顿和华盛顿州汉福德的 4 公里基线探测器以及位于汉福德的另外 2 公里探测器组成。 LIGO 的工作原理是使用精密激光干涉测量法来测量隔震测试质量镜由于遥远天体物理事件发出的引力波 (GW) 产生的极小力而产生的相对运动。这些波尚未被直接观测到。 路易斯安那州立大学 (LSU) 距离 LIGO 利文斯顿 (LLO) 约 40 公里，作为 LIGO 科学合作组织 (LSC) 的成员，与 LIGO 有着长期的合作关系。 作为 LSC 的一部分，路易斯安那州立大学小组正在对 LIGO 数据进行分析，以获取来自成对黑洞或中子星（其轨道螺旋向彼此靠近并合并）的引力波信号，以及来自其他产生短时爆发的来源的信号。 该小组的工作还包括提供天体物理源搜索所需的校准和数据质量信息所需的物理测量和数据分析。 Advanced LIGO 的隔震系统是 LIGO 天文台的升级版，每周可以检测多个震源，该系统的研究、开发和原型设计也在各个 LSC 设施中进行，其中重要的 LSU 团队也参与其中。最后，高级 LIGO 探测器高占空比所需的倾斜测量系统的概念设计正在研究中。在广泛的背景下，这些活动涉及路易斯安那州立大学 LIGO 的教师、博士后、研究生和本科生，让路易斯安那州立大学的人们受益于与经验丰富的 LIGO 和 LSC 科学家一起工作，并使用能够实现重大科学发现的极好的设备。 路易斯安那州立大学小组参与了多个向公众展示引力波科学的项目，该小组将继续努力利用和创造推广机会。 路易斯安那州立大学与 LIGO 共享其图书馆、网络设施和研讨会。 LIGO 人员参加路易斯安那州立大学物理与天文学系的座谈会和天体物理学讨论小组，并经常直接与我们的学生一起工作。 LIGO 与我们附近的研究型大学之间这种密切而广泛的关系预计将通过持续合作得到加强。