Title: Stochastic Gravitational-Wave Background due to Primordial Binary Black Hole Mergers Show Chinese title

Title: 原始双黑洞合并引起的随机引力波背景

Abstract: Recent Advanced LIGO detections of binary black hole mergers have prompted multiple studies investigating the possibility that the heavy GW150914 binary system was of primordial origin, and hence could be evidence for dark matter in the form of black holes. We compute the stochastic background arising from the incoherent superposition of such primordial binary black hole systems in the universe and compare it to the similar background spectrum due to binary black hole systems of stellar origin. We investigate the possibility of detecting this background with future gravitational wave detectors, and discuss the possibility of using the stochastic gravitational-wave background measurement to constrain the dark matter component in the form of black holes. Show Chinese abstract

Abstract: 最近先进的LIGO对双黑洞合并的探测引发了多项研究，探讨了GW150914这种大质量双黑洞系统可能是原初起源的可能性，因此可能作为暗物质以黑洞形式存在的证据。 我们计算了宇宙中这种原初双黑洞系统非相干叠加产生的随机背景，并将其与由恒星起源的双黑洞系统产生的类似背景谱进行比较。 我们研究了未来引力波探测器检测此背景的可能性，并讨论了利用随机引力波背景测量来限制以黑洞形式存在的暗物质成分的可能性。