论文标题
Golum：一种快速而精确的方法，可以搜索和分析，强烈的重力波动事件
GOLUM: A fast and precise methodology to search for, and analyze, strongly lensed gravitational-wave events
论文作者
论文摘要
像光一样，引力波可以通过沿着旅行路径的巨大物体在重力上进行重力镜头。强镜会产生来自同一二元聚结的几张图像，并被预测在地面重力探测器中具有有希望的速率。为了在数据中搜索这种效果，原则上，必须分析单个检测到的事件的所有可能组合，这些事件的数量将不断增加。为了跟上计算成本的上升，我们提出了一种快速，精确的方法，以分析强烈的重力波事件。该方法是通过有效使用第一个图像的后部作为第二张图像的先验来起作用。由于其速度障碍性的提高，该方法可以对两个以上图像进行联合分析。此外，它为需要大量注射的新的强镜研究打开了大门。
Like light, gravitational waves can be gravitationally lensed by massive objects along their travel path. Strong lensing produces several images from the same binary coalescence and is forecasted to have a promising rate in ground-based gravitational detectors. To search for this effect in the data, one would, in principle, have to analyze all the possible combinations of the individual detected events, whose number will be ever-increasing. To keep up with the rising computational cost, we propose a fast and precise methodology to analyze strongly-lensed gravitational wave events. The method works by effectively using the posterior of the first image as prior for the second image. Thanks to its increased speed tractability, this method enables the joint analysis of more than two images. In addition, it opens the door to new strong lensing studies where a large number of injections is required.
