论文标题
在PYCBC离线搜索中建立来自单个天文台引力波信号的重要性
Establishing significance of gravitational-wave signals from a single observatory in the PyCBC offline search
论文作者
论文摘要
紧凑型二元合并的引力波观察使我们能够将黑洞和中子星进一步看到宇宙，最近的结果代表了对有史以来紧凑的对象的最敏感搜索。当前，大多数搜索紧凑型二元聚结的重力波依赖于检测到来自多个检测器的一致触发器。在本文中，我们描述了一种推断单探测器信号的重要性的新方法，超出了分析的实时时间。使用此方法，我们可以恢复仅在单个检测器中触发的大声信号。我们在搜索O3数据中演示了此方法，并恢复七个单端事件，每年误报率少于两个。这些与单个检测器中GWTC-2.1和GWTC-3搜索中发现的事件相同，除了3-OGC和4-OGC的一个事件。通过注入信号的运动，我们估计总时间 - 批量灵敏度增加了$ 1.20 \ pm 0.02 $ 0.02 $，每两年的误报率与完全忽略单探测事件相比。
Gravitational-wave observations of compact binary coalescences are allowing us to see black holes and neutron stars further into the universe and recent results represent the most sensitive searches for compact objects ever undertaken. Most searches for gravitational waves from compact binary coalescence currently rely on detecting coincident triggers from multiple detectors. In this paper, we describe a new method for extrapolating significance of single-detector signals beyond the live-time of the analysis. Using this method, we can recover loud signals which only triggered in a single detector. We demonstrate this method in a search of O3 data, and recover seven single-detector events with a false alarm rate less than two per year. These were the same events as discovered in the GWTC-2.1 and GWTC-3 searches in a single detector, and all but one event from 3-OGC and 4-OGC. Through a campaign of injected signals, we estimate that the total time--volume sensitivity increases by a factor of up to $1.20 \pm 0.02$ at a false alarm rate of one per two years compared to completely ignoring single-detector events.
