标题： 多频段引力波事件率和恒星物理 显示英文标题

标题： Multiband gravitational-wave event rates and stellar physics

摘要： 地面和空间观测站对恒星级黑洞双星的联合引力波探测将为基础物理和天文学提供前所未有的机会。 我们提出了一种半解析方法，通过结合地面干涉仪（如LIGO/Virgo）和空间任务（如LISA）的选择效应来估计多频段事件率。 我们首先利用当前LIGO/Virgo数据的信息预测预期的多频段探测数量，然后通过双星恒星的群体合成模拟进行预测。 我们估计，少数到几十个LISA探测结果可用于预测地面上可探测的合并事件。 相反，可以通过使用来自地面探测的先验信息从LISA数据流中提取数百个事件。 一般来说，LISA可观测的双星合并信号足够强，可以被当前和未来的地面探测器无歧义地识别。 因此，第三代探测器与LIGO/Virgo相比不会增加多频段探测的数量。 我们使用群体合成模拟来探索可能通过多频段事件受到约束的一些恒星物理，我们展示了与仅地面探测相比，某些形成路径可能在多频段事件中被过度代表。 显示英文摘要

摘要： Joint gravitational-wave detections of stellar-mass black-hole binaries by ground- and space-based observatories will provide unprecedented opportunities for fundamental physics and astronomy. We present a semi-analytic method to estimate multiband event rates by combining selection effects of ground-based interferometers (like LIGO/Virgo) and space missions (like LISA). We forecast the expected number of multiband detections first by using information from current LIGO/Virgo data, and then through population synthesis simulations of binary stars. We estimate that few to tens of LISA detections can be used to predict mergers detectable on the ground. Conversely, hundreds of events could potentially be extracted from the LISA data stream using prior information from ground detections. In general, the merger signal of binaries observable by LISA is strong enough to be unambiguously identified by both current and future ground-based detectors. Therefore third-generation detectors will not increase the number of multiband detections compared to LIGO/Virgo. We use population synthesis simulations to explore some of the stellar physics that could be constrained with multiband events, and we show that specific formation pathways might be overrepresented in multiband events compared to ground-only detections.