In 2016, LIGO and Virgo announced the first observation of gravitational waves from a binary black hole merger, known as GW150914. To establish the confidence of this detection, large-scale scientific workflows were used to measure the event’s statistical significance. They used code written by the LIGO/Virgo and were executed on the LIGO Data Grid. The codes are publicly available, but there has not yet been an attempt to directly reproduce the results, although several analyses have replicated the analysis, confirming the detection. We attempt to reproduce the result presented in the GW150914 discovery paper using publicly available code on the Open Science Grid. We show that we can reproduce the main result but we cannot exactly reproduce the LIGO analysis as the original dataset used is not public. We discuss the challenges we encountered and make recommendations for scientists who wish to make their work reproducible.

中文翻译：

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再现GW150914：来自二元黑洞合并的引力波的首次观察

2016年，LIGO和处女座宣布首次观测到由二元黑洞合并产生的引力波，即GW150914。为了建立这种检测的可信度，使用了大规模的科学工作流程来衡量事件的统计意义。他们使用了LIGO / Virgo编写的代码，并在LIGO数据网格上执行。该代码是公开可用的，但是尽管数次分析已复制了该分析以确认检测，但仍未尝试直接重现结果。我们尝试使用Open Science Grid上公开可用的代码来重现GW150914发现论文中提出的结果。我们证明了我们可以重现主要结果，但由于使用的原始数据集不是公开的，因此我们无法准确地重现LIGO分析。