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arXiv 2109.05910gr-qcastro-ph.CO
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用爱因斯坦望远镜和宇宙探测器寻找亚太阳质量双星

Search for sub-solar mass binaries with Einstein Telescope and Cosmic Explorer

Rafael C. Nunes

摘要:

对亚太阳质量超紧凑天体的可能探测将导致对并非天体物理学起源和/或与外来超紧凑天体的形成情景有关的黑洞的存在的新观点。这两种可能性都为更好地理解我们的宇宙开辟了新的视角。在这项工作中,我们研究了在第三代地基引力波探测器的预期灵敏度范围内,探测组分质量在$10^{-2} M_\odot$到1 $M_\odot$范围内的亚太阳质量双星的意义,即,爱因斯坦望远镜(ET)和宇宙探测器(CE)。假设用于检测的幅度信噪比最小,即,$ρ= 8$的最大视界距离计算结果表明,对于组分质量为$10^{-2} \, M_\odot$和1 $M_\odot$的超紧双星系统,ET的最大视界距离分别为40 Mpc和1.89 Gpc,CE的最大视界距离分别为125 Mpc和5.8 Gpc。其他案件也在文中介绍。我们导出了合并率,并讨论了合并率对原初黑洞(PBH)$f_{\rm PBH}$丰度的影响.考虑到整个质量范围[ $10^{-2}$ - 1] $M_\odot$,我们分别找到ET(CE)的$f_{\rm PBH} < 0.70$($<$ $0.06$)。

英文摘要:

A possible detection of sub-solar mass ultra-compact objects would lead to new perspectives on the existence of black holes that are not of astrophysical origin and/or pertain to formation scenarios of exotic ultra-compact objects. Both possibilities open new perspectives for better understanding of our universe. In this work, we investigate the significance of detection of sub-solar mass binaries with components mass in the range: $10^{-2} M_\odot$ up to 1$M_\odot$, within the expected sensitivity of the ground-based gravitational waves detectors of third-generation, viz., the Einstein Telescope (ET) and the Cosmic Explorer (CE). Assuming a minimum of amplitude signal-to-noise ratio for detection, viz., $ρ= 8$, we find that the maximum horizon distances for an ultra-compact binary system with components mass $10^{-2} \, M_\odot$ and 1$M_\odot$ are 40 Mpc and 1.89 Gpc, respectively, for ET, and 125 Mpc and 5.8 Gpc, respectively, for CE. Other cases are also presented in the text. We derive the merger rate, and discuss consequences on the abundances of primordial black hole (PBH), $f_{\rm PBH}$. Considering the entire mass range [$10^{-2}$ - 1]$M_\odot$, we find $f_{\rm PBH} < 0.70$ ($<$ $0.06$) for ET (CE), 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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