Search for gravitational waves from galactic and extra--galactic binary neutron stars
Search for gravitational waves from galactic and extra--galactic binary neutron stars
复制标题
寻找来自银河系和银河系外双中子星的引力波
DOI：
10.1103/physrevd.72.082001
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发表时间：
2005
影响因子：
5
通讯作者：
et al
中科院分区：
文献类型：
--
作者：
L. S. C. B. Abbott;et al
我们使用 LIGO 引力波探测器第二次科学运行的 373 小时（约 15 天）数据来搜索来自最大距离约 1.5 Mpc 的双中子星聚结的信号，该空间体积包括仙女座星系和本星系群的其他星系。该分析需要根据一组符合标准，在两个 LIGO 站点的探测器数据中找到信号。背景（偶然符合率）是根据数据确定的，用于判断候选事件的重要性。在我们的搜索中没有发现吸气引力波事件。使用包括本地群的群体模型，我们建立了每个银河系等效星系每年少于 47 次螺旋事件的上限，对于组成质量在 1 到 3 $M_\odot$ 之间的非旋转双中子星系统，置信度为 90%。
We use 373 hours ($\approx$ 15 days) of data from the second science run of the LIGO gravitational-wave detectors to search for signals from binary neutron star coalescences within a maximum distance of about 1.5 Mpc, a volume of space which includes the Andromeda Galaxy and other galaxies of the Local Group of galaxies. This analysis requires a signal to be found in data from detectors at the two LIGO sites, according to a set of coincidence criteria. The background (accidental coincidence rate) is determined from the data and is used to judge the significance of event candidates. No inspiral gravitational wave events were identified in our search. Using a population model which includes the Local Group, we establish an upper limit of less than 47 inspiral events per year per Milky Way equivalent galaxy with 90% confidence for non-spinning binary neutron star systems with component masses between 1 and 3 $M_\odot$.