在LIGO第三次观测运行中的引力波数据中寻找不对称和高度预处理的二进制黑洞
Stefano Schmidt1,2, Sarah Caudill3,4, Jolien D E Creighton5
1Nikhef, Science Park 105, 1098 XG, Amsterdam, The Netherlands.
Physical review letters
|December 3, 2024
概括
这项研究使用GstLAL管道增强了引力波检测,用于预处理二进制黑洞. 虽然恢复了30个已知的事件,但没有发现新的候选事件,排除了大量未被发现的预处理二进制文件.
科学领域:
- 天体物理学 天体物理学
- 引力波天文学 引力波天文学
- 一般相对论一般相对论.
背景情况:
- 探测引力波 (GWs) 已经为宇宙打开了一个新的窗口.
- 双重黑洞的合并是可检测的GW的主要来源.
- 目前的搜索在检测具有复杂旋转动态的系统方面存在局限性,例如前行.
研究的目的:
- 开发和应用一种针对具有严重错位旋转的不对称二进制黑洞系统而优化的匹配过搜索.
- 评估这个新的搜索策略与标准的旋转对齐搜索相比,对其灵敏度的提高.
- 为了限制假设的,以前未被发现的二进制黑洞群体的融合速度.
主要方法:
- 使用GstLAL管道进行匹配过分析.
- 将搜索应用到来自LIGO和Virgo第三次观测运行的数据上.
- 专注于识别来自不对称的二进制黑洞合并的强有力的 precessional 效应的信号.
主要成果:
- 成功地从引力波短暂目录中恢复了30个先前识别的引力波事件.
- 证明了用于检测具有先处理旋转的系统的提高灵敏度.
- 没有发现任何新的重大引力波候选物.
- 在R_{90%}=0.28_{-0.04}^{+0.33} Gpc^{-3} yr^{-1} 设定了不对称的,高度预处理信号的融合率的上限.
结论:
- 增强的搜索策略有效地检测出具有复杂旋转配置的已知二进制黑洞合并.
- 对于未检测到的预处理二进制文件的合并率的上限与当前的LIGO-Virgo-KAGRA协作估计相一致.
- 这些发现有效地排除了大量,尚未被发现的大量二进制黑洞合并的存在.
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