论文标题
引力波宿主的快速定位
Rapid localization of gravitational wave hosts with FIGARO
论文作者
论文摘要
GW170817电磁对应物在检测到GW170817后产生的丰富科学文献证明了在共同移动量内迅速而准确定位的重力定位的重要性。在这封信中，我们介绍了Figaro，这是一种依赖贝叶斯非参数的准备使用和公开可用的软件。 Figaro旨在与参数估计算法并行运行，以提供更新的三维体积定位信息。与任何现有算法不同，Figaro重建的分析性质允许将Galaxy目录的条目排名，因为它们成为引力波事件的宿主的可能性，因此为迅速的电磁波后续跟踪提供了附加工具。我们说明了Figaro在二进制黑洞以及GW170817上的特征。最后，我们通过产生所谓的PP图来证明Figaro的鲁棒性，并提出了一种基于信息熵的方法，以评估何时在参数估计运行期间开始释放Skymaps是合理的。
The copious scientific literature produced after the detection of GW170817 electromagnetic counterpart demonstrated the importance of a prompt and accurate localization of the gravitational wave within the co-moving volume. In this letter, we present FIGARO, a ready to use and publicly available software that relies on Bayesian non-parametrics. FIGARO is designed to run in parallel with parameter estimation algorithms to provide updated three-dimensional volume localization information. Differently from any existing algorithms, the analytical nature of the FIGARO reconstruction allows a ranking of the entries of galaxy catalogues by their probability of being the host of a gravitational wave event, hence providing an additional tool for a prompt electromagnetic follow up of gravitational waves. We illustrate the features of FIGARO on binary black holes as well as on GW170817. Finally, we demonstrate the robustness of FIGARO by producing so-called pp-plots and we present a method based on information entropy to assess when, during the parameter estimation run, it is reasonable to begin releasing skymaps.
