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Detectability of Ultra-compact X-Ray Binaries as LISA Sources
The Astrophysical Journal Letters ( IF 7.9 ) Pub Date : 2020-08-26 , DOI: 10.3847/2041-8213/abae66
Wen-Cong Chen 1, 2 , Dong-Dong Liu 3 , Bo Wang 3
Affiliation  

Ultra-compact X-ray binaries (UCXBs) are low-mass X-ray binaries with ultra-short orbital periods (usually less than 1 hr) and hydrogen-poor donor stars, which are proposed to be potential Laser Interferometer Space Antenna (LISA) sources. In this work, we first employ the Modules for Experiments in Stellar Astrophysics code to examine the parameter space of the progenitors of UCXBs that LISA will detect. Our simulations indicate that the initial binaries with a neutron star and a ##IMG## [http://ej.iop.org/images/2041-8205/900/1/L8/apjlabae66ieqn1.gif] {$0.4\mbox{--}3.5\,{M}_{\odot }$} companion star, in an orbit of initial orbital period smaller than the bifurcation period, could evolve into UCXBs, some of which will emit gravitational wave signals that can be detectable by LISA. However, the initial orbital periods of the binaries that will evolve into UCXB-LISA sources in a distance of 10 kpc are located in a very narrow range, i.e., the formation of th...

中文翻译:

超紧凑X射线二进制作为LISA源的可检测性

超紧凑X射线双星(UCXB)是具有超短轨道周期(通常少于1小时)和贫氢施主星的低质量X射线双星,它们被认为是潜在的激光干涉仪空间天线(LISA) )来源。在这项工作中,我们首先采用恒星天体物理学代码中的“实验模块”来检查LISA将检测到的UCXB祖细胞的参数空间。我们的模拟表明,带有中子星和## IMG ##的初始双星[http://ej.iop.org/images/2041-8205/900/1/L8/apjlabae66ieqn1.gif] {$ 0.4 \ mbox { -} 3.5 \,{M} _ {\ odot} $}个伴星,在其初始轨道周期小于分叉周期的轨道上,可能演化为UCXB,其中一些会发出引力波信号,可由丽莎 然而,
更新日期:2020-08-27
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