Spinning, Eccentric Black Hole Pairs: Black Hole Scattering and Binary Formation

旋转偏心黑洞对：黑洞散射和二元形成

• 批准号: 0908365
• 负责人: Janna Levin
• 金额: $ 36.58万
• 依托单位: Barnard College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2015-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0908365&HistoricalAwards=false
• 关键词: Spinning; Eccentric; Black; Hole; Pairs

AST-0908365LevinIn dense regions, stellar mass black holes can tidally capture another comparable mass black hole into a highly eccentric binary. Recent estimates of the merger rates of stellar mass binaries in dense galactic nuclei have sparked interest in a class of such highly eccentric black hole pairs. This project will include the effects of spin and orbital precession in a relativistic framework, to analyze the scattering, mergers, and gravitational waves from this interesting source. Another part of this project will consider "supermergers", double-event candidates, which are black hole binaries that emit a burst of gravitational waves on formation and merger, in the bandwidth of ground-based observatories, and then fall into the super-massive black hole at the galactic center, to emit gravitational waves in the bandwidth of space-based observatories. Thus, this work will (1) calculate relativistic scattering of spinning black holes and detection rates in galactic nuclei with a central super-massive black hole; (2) compute the gravitational wave spectra from the distribution of relativistic, spinning orbits; and (3) compute event rates for "supermergers", tidally captured black hole pairs that scatter toward the super-massive black hole at the galactic center within an observable timeframe.Barnard College is a women's college in New York City affiliated with Columbia University, and each year a Barnard undergraduate will intern with this research group. The plan includes development of a publicly accessible interactive simulator of black hole orbits, offering a research tool to the wider community. Such integration of direct scientific research into undergraduate education promotes Barnard's commitment to increasing the presence of women in the sciences. A complementary aspect involves outreach in NYC high schools.

在密集的区域，恒星质量黑洞可以潮汐地捕获另一个质量相当的黑洞，形成一个高度偏心的双星。最近对密集星系核中恒星质量双星的合并率的估计引起了人们对一类高度偏心的黑洞对的兴趣。该项目将包括在相对论框架下的自旋和轨道进动的影响，以分析来自这个有趣来源的散射、合并和引力波。该项目的另一部分将考虑“超级合并”，即双事件候选者，即黑洞双星，在地面天文台的带宽内形成和合并时发射一束引力波，然后落入银河系中心的超大质量黑洞，在天基天文台的带宽内发射引力波。因此，本工作将(1)计算旋转黑洞的相对论散射和中心有超大质量黑洞的星系核的探测率；(2)根据相对论性自旋轨道的分布计算引力波谱；(3)计算“超级合并”的事件率，在可观测的时间范围内，潮汐捕获的黑洞对向银河系中心的超大质量黑洞散射。巴纳德学院是纽约市的一所女子学院，隶属于哥伦比亚大学，每年都会有一名巴纳德学院的本科生在这个研究小组实习。该计划包括开发一个可公开访问的黑洞轨道交互式模拟器，为更广泛的社区提供一个研究工具。将直接的科学研究与本科教育相结合，促进了巴纳德致力于增加女性在科学领域的存在。一个互补的方面是在纽约市的高中进行外展。