标题： 多频段引力波事件率与恒星物理 显示英文标题

标题： Multiband gravitational-wave event rates and stellar physics

摘要： 地面和空间天文台对恒星级黑洞双星的联合引力波探测将为物理学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）的选择效应来估算多频段事件率。 我们首先通过当前LIGO/Virgo数据的信息预测预期的多频段探测数量，然后通过双星的群体合成模拟进行预测。 我们估计，从几十到几百个LISA探测中可以用来预测地面可检测的合并事件。 相反地，利用地面探测的先验信息，可以从LISA的数据流中提取出数百个事件。 总体而言，LISA可观测到的双星合并信号足够强，能够被当前和未来的地面探测器明确识别。 因此，第三代探测器与LIGO/Virgo相比，并不会增加多频段探测的数量。 我们使用孤立双星的群体合成模拟来探索一些可以通过多频段事件约束的恒星物理现象，并表明特定的形成路径可能在多频段事件中比仅地面探测中更为突出。 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 semianalytic 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 of isolated binary stars 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.