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arXiv 1704.01352astro-ph.HEgr-qc
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通过孤立双星演化形成前三个引力波观测

Formation of the first three gravitational-wave observations through isolated binary evolution

Simon Stevenson, Alejandro Vigna-Gómez, Ilya Mandel, Jim W. Barrett, Coenraad J. Neijssel, David Perkins, Selma E. de Mink

摘要:

在最初4个月的数据采集中,Advanced LIGO探测到了来自两个二元黑洞合并的引力波,GW 150914和GW 151226,以及统计上不太重要的二元黑洞合并候选者LVT 151012。我们使用我们的快速二进制人口合成代码COMPAS表明,所有这三个事件可以解释由一个单一的进化通道-经典的孤立的二进制进化通过包括一个共同的信封相传质。我们表明,所有这三个事件都可能形成于低金属丰度环境(Z = 0.001)的祖双星与典型的总质量$\gtrsim 160 M_\odot$,$\gtrsim 60 M_\odot$和$\gtrsim 90 M_\odot$,分别为GW 150914,GW 151226和LVT 151012。

英文摘要:

During its first 4 months of taking data, Advanced LIGO has detected gravitational waves from two binary black hole mergers, GW150914 and GW151226, along with the statistically less significant binary black hole merger candidate LVT151012. We use our rapid binary population synthesis code COMPAS to show that all three events can be explained by a single evolutionary channel -- classical isolated binary evolution via mass transfer including a common envelope phase. We show all three events could have formed in low-metallicity environments (Z = 0.001) from progenitor binaries with typical total masses $\gtrsim 160 M_\odot$, $\gtrsim 60 M_\odot$ and $\gtrsim 90 M_\odot$, for GW150914, GW151226, and LVT151012, respectively.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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