Continuous gravitational waves in ground and space-based detectors

地面和天基探测器中的连续引力波

• 批准号: 2446638
• 金额: --
• 依托单位: University of Glasgow
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2446638
• 关键词: Continuous; gravitational; waves; ground; space

Gravitational wave detection and analysis has delivered some of the most exciting scientific discoveries of recent years, including observations and measurements of transient signals from colliding black holes and neutron stars. The data for these comes from the ground-based LIGO and Virgo gravitational wave instruments and further analysis methods have been developed to detect gravitational waves from spinning neutron stars, and specifically pulsars. Although no such continuous wave sources have been detected yet, the analysis pipelines are well developed and these techniques for continuous gravitational wave detection are also applicable to space-based observations. The newly-formed LISA consortium is developing the instrumentation and analysis tools necessary for a space-based gravitational wave detector to be launched in the early 2030s with support from UKSA. Although LISA will detect gravitational waves at a lower frequency than ground-based detectors. We will develop analysis techniques for this data based on the continuous wave methods devised for the analysis of ground-based data. This is particularly applicable to LISA as we expect a large number of quasi-monochromatic signals to be present in the LISA band from binary systems far away from coalescence. The objective it to study the white dwarf population seen by LISA and its broader impact on stellar evolution.

近年来，引力波探测和分析带来了一些最令人兴奋的科学发现，包括对碰撞黑洞和中子星的瞬态信号的观测和测量。这些数据来自地面的LIGO和Virgo引力波仪器，并且已经开发了进一步的分析方法来探测来自旋转中子星的引力波，特别是中子星。虽然还没有探测到这样的连续波源，但分析管道已经很发达，这些连续引力波探测技术也适用于天基观测。新成立的丽莎联盟正在开发在UKSA的支持下于21世纪30年代初发射的天基引力波探测器所需的仪器和分析工具。尽管丽莎将以比地面探测器更低的频率探测引力波。我们将在为分析地面数据而设计的连续波方法的基础上开发这种数据的分析技术。这是特别适用于丽莎，因为我们预计大量的准单色信号将存在于丽莎频带远离合并的二元系统。其目的是研究丽莎观测到的白色矮星数量及其对恒星演化的广泛影响。

项目成果

Rapid determination of LISA sensitivity to extreme mass ratio inspirals with machine learning

• DOI: 10.1093/mnras/stad1397
• 发表时间: 2022-12
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: C. Chapman-Bird;C. Berry;G. Woan