Gravitational Waves from Compact Objects

来自致密物体的引力波

• 批准号: 1912625
• 负责人: Benjamin Owen
• 金额: $ 30万
• 依托单位: Texas Tech University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-08-01 至 2023-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1912625&HistoricalAwards=false
• 关键词: Gravitational; Waves; Compact; Objects

This award supports research in relativity and relativistic astrophysics and it addresses the priority areas of NSF's "Windows on the Universe" Big Idea. LIGO (the Laser Interferometer Gravitational-wave Observatory) has made history by detecting several binary black hole mergers and a binary neutron star merger. The latter was especially exciting because it was also detected by optical and other electromagnetic telescopes and because it provided new insights into the behavior of matter at its greatest extremes since the Big Bang. Detection of continuous gravitational waves from a single neutron star, a faint signal lasting many years, could tell us even more about such matter - how solid it is, how well it conducts heat and electricity, maybe even the existence of exotic states predicted by particle physics. This award supports searches of Advanced LIGO data for continuous gravitational waves from the youngest neutron stars in our galaxy, using existing telescope observations to point toward likely targets. It also supports the training of graduate and undergraduate students who will constitute the next generation of scientists.Specific science goals are (1) directed searches for young non-pulsing neutron stars such as Cas A, (2) narrow band searches for r-mode oscillations in pulsars such as the Crab, and (3) theoretical guidance and interpretation of searches for continuous gravitational waves, particularly from neutron-star r-modes. Searches will be performed with the Texas Tech group's longstanding code pipeline based on matched filtering, which will be upgraded as the award progresses.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项支持相对论和相对论天体物理学的研究，并解决了NSF“宇宙之窗”大理念的优先领域。LIGO（激光干涉引力波天文台）通过探测几个双黑洞合并和一个双中子星星合并创造了历史。 后者特别令人兴奋，因为它也被光学和其他电磁望远镜探测到，因为它提供了对大爆炸以来物质最极端行为的新见解。 探测到来自单个中子星星的连续引力波，这是一个持续多年的微弱信号，可以告诉我们更多关于这类物质的信息--它有多坚固，它的导热和导电能力有多好，甚至可能是粒子物理学预测的奇异状态的存在。 该奖项支持高级LIGO数据搜索来自我们银河系中最年轻的中子星的连续引力波，使用现有的望远镜观测指向可能的目标。 它还支持培养研究生和本科生，他们将成为下一代科学家，具体的科学目标是（1）定向搜索年轻的非脉冲中子星，如Cas A，（2）窄带搜索的r-模式振荡的恒星，如螃蟹，和（3）理论指导和解释搜索连续引力波，特别是从中子星r-模式。 评审将通过德克萨斯理工大学长期以来基于匹配过滤的代码管道进行，该管道将随着奖项的进展而升级。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响评审标准进行评估，被认为值得支持。

项目成果

Constraints on r-modes and Mountains on Millisecond Neutron Stars in Binary Systems

• DOI: 10.3847/2041-8213/ac62d7
• 发表时间: 2022-03
• 期刊: The Astrophysical Journal Letters
• 作者: P. Covas;M. Papa;R. Prix;B. Owen

Directed searches for continuous gravitational waves from twelve supernova remnants in data from Advanced LIGO’s second observing run

• DOI: 10.1103/physrevd.101.083023
• 发表时间: 2020-02
• 期刊: Physical Review D
• 影响因子: 5
• 作者: L. Lindblom;B. Owen

First searches for gravitational waves from r -modes of the Crab pulsar

• DOI: 10.1103/physrevd.104.122008
• 发表时间: 2021-01
• 期刊: Physical Review D
• 影响因子: 5
• 作者: B. Rajbhandari;B. Owen;S. Caride;R. Inta

First Constraining Upper Limits on Gravitational-wave Emission from NS 1987A in SNR 1987A

• DOI: 10.3847/2041-8213/ac84dc
• 发表时间: 2022-06
• 期刊: The Astrophysical Journal Letters
• 作者: B. Owen;L. Lindblom;Luciano Soares Pinheiro