Analysis framework for the prompt discovery of compact binary mergers in gravitational-wave data
Analysis framework for the prompt discovery of compact binary mergers in gravitational-wave data
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DOI：
10.1103/physrevd.95.042001
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发表时间：
2016-04
影响因子：
5
通讯作者：
C. Messick;K. Blackburn;P. Brady;P. Brockill;K. Cannon;Romain Cariou;S. Caudill;S. Chamberlin;J. Creighton;R. Everett;C. Hanna;D. Keppel;R. Lang;T. Li;D. Meacher;A. Nielsen;C. Pankow;S. Privitera;H. Qi;S. Sachdev;L. Sadeghian;L. Singer;E. Thomas;L. Wade;M. Wade;A. Weinstein;K. Wiesner
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文献类型：
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作者：
C. Messick;K. Blackburn;P. Brady;P. Brockill;K. Cannon;Romain Cariou;S. Caudill;S. Chamberlin;J. Creighton;R. Everett;C. Hanna;D. Keppel;R. Lang;T. Li;D. Meacher;A. Nielsen;C. Pankow;S. Privitera;H. Qi;S. Sachdev;L. Sadeghian;L. Singer;E. Thomas;L. Wade;M. Wade;A. Weinstein;K. Wiesner
我们描述了一个基于流的分析管道，用于在合并信号到达地球的1分钟内检测来自双中子星、双黑洞和中子星-黑洞双星合并的引力波。这种低延迟探测对于电磁设备的快速响应至关重要，以便观察任何可能由至少一颗中子星合并产生的衰落的电磁对应物。即使对于预计不会产生对应的系统，对数据的低延迟分析对于决定何时不指向望远镜以及作为对天文台操作的反馈也是有用的。利用这条管道的分析人员首先发现了GW151226，这是迄今为止探测到的第二个引力波事件。该管道还可以在离线模式下运行，在离线模式下，它包含了更精细的数据质量信息，并采用了不适用于在线模式的随机方法。该管道的离线模式用于探测前两个引力波事件GW150914和GW151226，以及识别第三个候选引力波事件LVT151012。
We describe a stream-based analysis pipeline to detect gravitational waves from the merger of binary neutron stars, binary black holes, and neutron-star–black-hole binaries within ∼1 min of the arrival of the merger signal at Earth. Such low-latency detection is crucial for the prompt response by electromagnetic facilities in order to observe any fading electromagnetic counterparts that might be produced by mergers involving at least one neutron star. Even for systems expected not to produce counterparts, low-latency analysis of the data is useful for deciding when not to point telescopes, and as feedback to observatory operations. Analysts using this pipeline were the first to identify GW151226, the second gravitational-wave event ever detected. The pipeline also operates in an offline mode, in which it incorporates more refined information about data quality and employs acausal methods that are inapplicable to the online mode. The pipeline’s offline mode was used in the detection of the first two gravitational-wave events, GW150914 and GW151226, as well as the identification of a third candidate, LVT151012.