论文标题
紧凑的中间质量黑洞X射线二进制：潜在的LISA来源？
Compact intermediate-mass black hole X-ray binaries: potential LISA sources?
论文作者
论文摘要
空间重力波（GW）检测器激光干涉仪空间天线（LISA）的科学目标是计划在2030年代初发射，以检测银河系中的低频GW信号。它的主要候选GW来源是白色矮人和中子星的紧凑型二进制物。在这项工作中，我们检查了紧凑的中间质量黑洞（IMBH）X射线二进制物是否可能是潜在的LISA来源。我们的模拟表明，IMBH二进制具有1000美元的M _ {\ odot} $ IMBH和3 $ m _ {\ odot} $供体星，在所谓的0.77 d的初始轨道时期附近的轨道上，0.77 d的0.77 d可以演变成一个超级X型X型X-RAY BAINTION，它将与emit gys grah s emit gns emiT grans grans grah s emiT grans。根据特征性菌株的进化轨道，IMBH X射线二进制物的初始供体明星质量为$ 1-3〜m _ {\ odot} $，并且初始轨道周期将比分叉周期略低于lisa可在15 kpc的距离内检测到。假设60个银河球状簇中的每一个都容纳了1000 $ M _ {\ odot} $ IMBH，则LISA将在银河系中检测到的最大紧凑型IMBH X射线二进制次数应小于十。因此，丽莎（Lisa）紧凑的IMBH X射线二进制文件的可检测性并不乐观。
The scientific aim of the space gravitational wave (GW) detector Laser Interferometer Space Antenna (LISA) that was scheduled to launch in the early 2030s is to detect the low-frequency GW signals in the Galaxy. Its main candidate GW sources are compact binaries of white dwarfs and neutron stars. In this work, we examine whether compact intermediate-mass black hole (IMBH) X-ray binaries could be potential LISA sources. Our simulations indicate that IMBH binary with a 1000 $M_{\odot}$ IMBH and a 3 $M_{\odot}$ donor star in an orbit of initial orbital period near the so-called bifurcation period of 0.77 d could evolve into an ultra-compact X-ray binary, which will emit GW signals with maximum frequency of 2.5 mHz. According to the evolutionary tracks of characteristic strain, IMBH X-ray binaries with the initial donor-star masses of $1-3~M_{\odot}$ and the initial orbital periods slightly less than the bifurcation periods will be detectable by the LISA in a distance of 15 kpc. Assuming each of 60 Galactic globular clusters hosts a 1000 $M_{\odot}$ IMBH, the maximum number of compact IMBH X-ray binaries that LISA will detect in the Galaxy should be less than ten. Therefore, the detectability of compact IMBH X-ray binaries by the LISA is not optimistic.
