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arXiv 2105.09151astro-ph.HEgr-qc
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3-OGC:来自致密双星合并的引力波目录

3-OGC: Catalog of gravitational waves from compact-binary mergers

Alexander H. Nitz, Collin D. Capano, Sumit Kumar, Yi-Fan Wang, Shilpa Kastha, Marlin Schäfer, Rahul Dhurkunde, Miriam Cabero

摘要:

我们基于对2015年至2019年(O 1,O2,O3 a)的公开LIGO和Virgo数据的分析,提出了第三个紧凑二元聚并的开放引力波目录(3-OGC)。我们更新的目录包括57个观测数据,其中包括4个以前没有报道过的二元黑洞合并。这包括55个双黑洞合并和两个双中子星合并GW 170817和GW 190425。我们没有发现额外的显着的双中子星或中子星-黑洞合并事件。最有信心的新探测是由LIGO汉福德和室女座天文台用$\mathcal{P}_{\textrm{astro}} > 0.99$观测到的双星黑洞合并GW 190925\_232845;其主要和次要分量质量分别为$20.2^{+3.9}_{-2.5} M_{\odot}$和$15.6^{+2.1}_{-2.6} M_{\odot}$。我们估计所有的二元黑洞事件的参数,使用最新的波形模型,包括次主导谐波和岁差效应。随着我们对底层人群的理解不断发展,为了实现深入的随访,我们提供了我们全面的事件目录,包括候选人的亚阈值人群,以及我们源参数估计的后验样本。

英文摘要:

We present the third Open Gravitational-wave Catalog (3-OGC) of compact-binary coalescences, based on the analysis of the public LIGO and Virgo data from 2015 through 2019 (O1, O2, O3a). Our updated catalog includes a population of 57 observations, including four binary black hole mergers that had not previously been reported. This consists of 55 binary black hole mergers and the two binary neutron star mergers GW170817 and GW190425. We find no additional significant binary neutron star or neutron star--black hole merger events. The most confident new detection is the binary black hole merger GW190925\_232845 which was observed by the LIGO Hanford and Virgo observatories with $\mathcal{P}_{\textrm{astro}} > 0.99$; its primary and secondary component masses are $20.2^{+3.9}_{-2.5} M_{\odot}$ and $15.6^{+2.1}_{-2.6} M_{\odot}$, respectively. We estimate the parameters of all binary black hole events using an up-to-date waveform model that includes both sub-dominant harmonics and precession effects. To enable deep follow-up as our understanding of the underlying populations evolves, we make available our comprehensive catalog of events, including the sub-threshold population of candidates, and the posterior samples of our source parameter estimates.

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