论文标题
用随机重力波背景爆米花信号跟踪黑洞的起源
Tracking the origin of black holes with the stochastic gravitational wave background popcorn signal
论文作者
论文摘要
未分辨的重力波（GWS）的来源是由宇宙学距离的二元二进制的合并而产生的。这样的背景在连续或爆米花状态下，具体取决于GW速率是否足够高，以使两个或多个事件在同一频段中重叠。这两个制度分别对应于所谓的{\ it占空比}的大小值。我们研究了原始黑洞（PBH）模型中背景的检测状态，并将其与恒星起源的黑洞产生的检测方式进行比较。着眼于地面探测器，我们表明，由于其质量功能和合并率差异，PBH-Origin背景的占空比大于天体物理黑洞的占空比。我们的研究通过检查随机背景的统计特性来了解黑洞种群的原始或天体物理性质的可能性。
Unresolved sources of gravitational waves (GWs) produced by the merger of a binary of black holes at cosmological distances combine into a stochastic background. Such a background is in the continuous or popcorn regime, depending on whether the GW rate is high enough so that two or more events overlap in the same frequency band. These two regimes respectively correspond to large and small values of the so-called {\it duty cycle}. We study the detection regime of the background in models of Primordial Black Holes (PBHs) and compare it to the one produced by black holes of stellar origin. Focusing on ground-based detectors, we show that the duty cycle of the PBH-origin background is larger than that of astrophysical black holes because of differences in their mass function and the merger rate. Our study opens up the possibility to learn about the primordial or astrophysical nature of black hole populations by examining the statistical properties of the stochastic background.
