Relativistic Astrophysics

相对论天体物理学

• 批准号: 9417371
• 负责人: Kip Thorne
• 金额: $ 20.99万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-03-01 至 1998-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9417371&HistoricalAwards=false
• 关键词: Relativistic; Astrophysics

Thorne 9417371 Theoretical research will be conducted at the interface between general relativity theory and astrophysics studying the generation of gravitational waves by astrophysical objects. A minor additional effort will study non-gravitational wave aspects of black holes and neutron stars. The gravitational-wave research will be focused on waves detectable by LIGO (the Laser Interferometer Gravitational-Wave Observatory) to identify what wave-generation computations are needed for LIGO. Of special concern will be the waves produced in the last ~10 minutes of the life of a binary system made up from neutron stars or black holes. During these 10 minutes the two bodies spiral inward, producing approximately 10,000 wave cycles that carry detailed information about the bodies' orbit, masses, and spins. During the last few milliseconds the bodies violently coalesce, producing waves that carry information about the equation of state of nuclear matter in the neutron star case and about the nonlinear dynamics of space-time curvature in the black hole case. The resulting waveforms must be computed to high accuracy for use as theoretical templates in analyzing LIGO data. ***

Thorne 9417371 将在广义相对论和天体物理学之间的接口上进行理论研究，研究天体物理物体产生的引力波。 额外的一小部分工作将研究黑洞和中子星的非引力波方面。 引力波研究将集中于 LIGO（激光干涉仪引力波天文台）可探测到的波，以确定 LIGO 需要哪些波生成计算。 特别值得关注的是由中子星或黑洞组成的双星系统生命最后约 10 分钟产生的波。 在这 10 分钟内，两个天体向内盘旋，产生大约 10,000 个波周期，其中包含有关天体轨道、质量和自旋的详细信息。 在最后几毫秒内，物体猛烈地合并，产生波，这些波携带有关中子星情况下核物质状态方程和黑洞情况下时空曲率非线性动力学的信息。 必须高精度地计算所得波形，以用作分析 LIGO 数据的理论模板。 ***