All-sky search in early O3 LIGO data for continuous gravitational-wave signals from unknown neutron stars in binary systems
All-sky search in early O3 LIGO data for continuous gravitational-wave signals from unknown neutron stars in binary systems
复制标题
在早期 O3 LIGO 数据中全天搜索来自双系统中未知中子星的连续引力波信号
DOI：
10.1103/physrevd.103.064017
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发表时间：
2021
影响因子：
5
通讯作者：
Affeldt, C.
中科院分区：
文献类型：
--
作者：
Abbott, R.;Abbott, T. D.;Abraham, S.;Acernese, F.;Ackley, K.;Adams, A.;Adams, C.;Adhikari, R. X.;Adya, V. B.;Affeldt, C.
快速旋转的中子星是连续引力波的有希望的来源。探测到这样的信号将允许在极端条件下探测物质的物理特性。已知脉冲星中有相当一部分属于双星系统。在双星系统中搜索未知的中子星需要专门的算法来解决未知的轨道频率调制。我们提出了一个搜索连续的引力波发射的中子星在二进制系统的早期数据从第三次观测运行的先进LIGO和先进的处女座探测器使用半相干，GPU加速，binaryskyhough管道。研究分析了LIGO探测器最敏感的频段，50-300 Hz。双星轨道参数分为四个区域，包括3至45天的轨道周期和2至40光秒的投影半长轴。未报告发现。我们使用模拟连续波信号估计搜索的灵敏度，在分析的参数空间中获得迄今为止最灵敏的结果。
Rapidly spinning neutron stars are promising sources of continuous gravitational waves. Detecting such a signal would allow probing of the physical properties of matter under extreme conditions. A significant fraction of the known pulsar population belongs to binary systems. Searching for unknown neutron stars in binary systems requires specialized algorithms to address unknown orbital frequency modulations. We present a search for continuous gravitational waves emitted by neutron stars in binary systems in early data from the third observing run of the Advanced LIGO and Advanced Virgo detectors using the semicoherent, GPU-accelerated,binaryskyhough pipeline. The search analyzes the most sensitive frequency band of the LIGO detectors, 50–300 Hz. Binary orbital parameters are split into four regions, comprising orbital periods of three to 45 days and projected semimajor axes of two to 40 light seconds. No detections are reported. We estimate the sensitivity of the search using simulated continuous wave signals, achieving the most sensitive results to date across the analyzed parameter space.