4-OGC: Catalog of Gravitational Waves from Compact Binary Mergers
4-OGC: Catalog of Gravitational Waves from Compact Binary Mergers
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DOI：
10.3847/1538-4357/aca591
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发表时间：
2021-12
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通讯作者：
A. Nitz;Sumit Kumar;Y. Wang 王;S. Kastha;Shichao 仕超 Wu 吴;Marlin B. Schäfer;Rahul Dhurkunde;C. Capano
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作者：
A. Nitz;Sumit Kumar;Y. Wang 王;S. Kastha;Shichao 仕超 Wu 吴;Marlin B. Schäfer;Rahul Dhurkunde;C. Capano
我们提出了双中子星（BNS）、双黑洞（BBH）和中子星-黑洞（NSBH）并合的第四个开放引力波目录（4-OGC）。该目录包括 2015 年至 2020 年的观测数据，涵盖 Advanced LIGO 和 Advanced Virgo 的第一次到第三次观测运行（O1、O2、O3a 和 O3b）。更新后的目录包括 7 个 BBH 合并，这些合并先前在 O3b 期间未曾报道过，总共有 94 个观测值：90 个 BBH、2 个 NSBH 和 2 个 BNS。最有信心的新检测，GW200318_191337，其成分质量为49.1−12.0+16.4M⊙和31.6−11.6+12.0M⊙；它的红移为 0.84−0.35+0.4（90% 可信区间），可能使其成为迄今为止距离最远的合并。我们估计 BBH 源的合并率，假设包含加性高斯峰值的幂律质量分布，在 z = 0 (0.2) 红移处为 16.5−6.2+10.4(25.0−8.0+12.6) Gpc−3 yr−1。对于 BNS 和 NSBH 源，假设已知源代表总人口，我们估计合并率分别为 200−148+309 Gpc−3 yr−1 和 19−14+30 Gpc−3 yr−1。我们使用解释仪器校准不确定性的最新模型为每个来源提供参考参数估计。相应的数据发布还包括我们全套的亚阈值候选者。
We present the fourth Open Gravitational-wave Catalog (4-OGC) of binary neutron star (BNS), binary black hole (BBH), and neutron star–black hole (NSBH) mergers. The catalog includes observations from 2015 to 2020 covering the first through third observing runs (O1, O2, O3a, and O3b) of Advanced LIGO and Advanced Virgo. The updated catalog includes seven BBH mergers that were not previously reported with high significance during O3b for a total of 94 observations: 90 BBHs, 2 NSBHs, and 2 BNSs. The most confident new detection, GW200318_191337, has component masses 49.1−12.0+16.4M⊙ and 31.6−11.6+12.0M⊙; its redshift of 0.84−0.35+0.4 (90% credible interval) may make it the most distant merger so far. We estimate the merger rate of BBH sources, assuming a power-law mass distribution containing an additive Gaussian peak, to be 16.5−6.2+10.4(25.0−8.0+12.6) Gpc−3 yr−1 at a redshift of z = 0 (0.2). For BNS and NSBH sources, we estimate a merger rate of 200−148+309 Gpc−3 yr−1 and 19−14+30 Gpc−3 yr−1, respectively, assuming the known sources are representative of the total population. We provide reference parameter estimates for each of these sources using an up-to-date model accounting for instrumental calibration uncertainty. The corresponding data release also includes our full set of subthreshold candidates.