论文标题
在未来重力波检测器中取出紧凑型二元合并后检测宇宙引力波背景
Detecting cosmological gravitational waves background after removal of compact binary coalescences in future gravitational wave detectors
论文作者
论文摘要
第三代重力检测器的灵敏度提高为检测原始宇宙学随机重力波背景（SGWB）的可能性。宇宙学SGWB的检测正面临着一个新的挑战：它可能会被由黑洞和/或中子星组成的大量紧凑型二元系统产生的前景所掩盖。在本文中，我们通过消除（切口）在时频空间中删除（切换）单独分辨的紧凑型二元信号来调查减少这一前景的可能性。 We establish that such an approach could be used to reach the SGWB sensitivity floor defined by the unresolved part of the compact binaries foreground, which we find to be between $Ω_{\rm GW} \sim (9.1 \times10^{-12} - 8.6\times10^{-11})$ for a frequency independent energy density spectrum and depending on the rate of coalescing binary中子星系。由于第三代重力波检测器将无法解析所有紧凑的二进制文件，因此紧凑型二进制文件的不可辨认的成分可能会限制使用这些探测器的SGWB搜索。
The improved sensitivity of third generation gravitational wave detectors opens the possibility of detecting the primordial cosmological stochastic gravitational wave background (SGWB). Detection of the cosmological SGWB is facing a novel challenge: it will likely be masked by the foreground generated by a large number of coalescences of compact binary systems consisting of black holes and/or neutron stars. In this paper, we investigate the possibility of reducing this foreground by removing (notching) the individually resolved compact binary signals in time-frequency space. We establish that such an approach could be used to reach the SGWB sensitivity floor defined by the unresolved part of the compact binaries foreground, which we find to be between $Ω_{\rm GW} \sim (9.1 \times10^{-12} - 8.6\times10^{-11})$ for a frequency independent energy density spectrum and depending on the rate of coalescing binary neutron star systems. Since third-generation gravitational wave detectors will not be able to resolve all compact binaries, the unresolvable component of the compact binaries foreground may limit the SGWB searches with these detectors.
