1-OGC: The First Open Gravitational-wave Catalog of Binary Mergers from Analysis of Public Advanced LIGO Data
1-OGC: The First Open Gravitational-wave Catalog of Binary Mergers from Analysis of Public Advanced LIGO Data
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DOI：
10.3847/1538-4357/ab0108
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发表时间：
2018-11
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通讯作者：
A. Nitz;C. Capano;A. Nielsen;S. Reyes;R. White;Duncan A. Brown;B. Krishnan
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作者：
A. Nitz;C. Capano;A. Nielsen;S. Reyes;R. White;Duncan A. Brown;B. Krishnan
我们提出了第一个开放引力波目录，通过使用高级LIGO第一次观测运行的公共数据来搜索紧密天体双星合并而获得。我们的分析是基于一种新的方法，这种方法在匹配滤波搜索致密天体合并引力波时改善了信号和噪声的分离。我们的星表中三个最重要的信号对应于双黑洞合并GW150914、GW151226和LVT151012。我们通过定义一个与这些事件一致的参数空间区域，假设这三个信号有一个共同的双黑洞。在这个假设下，我们发现LVT151012有97.6%的概率是天体物理起源。没有发现其他重要的双黑洞候选者，我们也没有观察到任何重要的双中子星或中子星-黑洞候选者。我们提供完整的事件目录，包括候选人群的亚阈值。
We present the first Open Gravitational-wave Catalog, obtained by using the public data from Advanced LIGO’s first observing run to search for compact-object binary mergers. Our analysis is based on new methods that improve the separation between signals and noise in matched-filter searches for gravitational waves from the merger of compact objects. The three most significant signals in our catalog correspond to the binary black hole mergers GW150914, GW151226, and LVT151012. We assume a common population of binary black holes for these three signals by defining a region of parameter space that is consistent with these events. Under this assumption, we find that LVT151012 has a 97.6% probability of being astrophysical in origin. No other significant binary black hole candidates are found, nor did we observe any significant binary neutron star or neutron star–black hole candidates. We make available our complete catalog of events, including the subthreshold population of candidates.