标题： 设计一个模板库以在高级LIGO的第二观测运行中观测致密双星合并 显示英文标题

标题： Designing a template bank to observe compact binary coalescences in Advanced LIGO's second observing run

摘要： 我们描述了用于构建一组波形（或模板库）的方法和新技术，该模板库适用于在高级LIGO的第二观测运行中搜索致密双星合并。 该模板库适用于由两个中子星、两个黑洞或一个中子星和一个黑洞组成的观测系统。 对于总质量小于4 $M_{\odot}$ 的波形，使用后牛顿公式进行建模，而对于总质量大于4 $M_{\odot}$ 的波形，则使用最新校准的有效单体模型，该模型结合了数值相对论以包含并合和后期振荡阶段。 忽略了自旋进动、物质、轨道偏心率以及四极辐射模式以外的辐射模式的影响。 与在高级LIGO第一观测运行中用于搜索致密双星并合的模板库不同，此处我们包含了总质量高达数百倍太阳质量的双黑洞系统，从而提高了观测此类系统的的能力。 我们引入了一种技术，用于调整波形滤波器的起始频率，从而使我们的模板库能够同时包含双中子星和高质量双黑洞波形。 我们还引入了滤波器波形长度的下限，以排除持续时间非常短、质量非常大的模板，这些模板的灵敏度因干涉仪的特性和性能而显著降低。 显示英文摘要

摘要： We describe the methodology and novel techniques used to construct a set of waveforms, or template bank, applicable to searches for compact binary coalescences in Advanced LIGO's second observing run. This template bank is suitable for observing systems composed of two neutron stars, two black holes, or a neutron star and a black hole. The Post-Newtonian formulation is used to model waveforms with total mass less than 4 $M_{\odot}$ and the most recent effective-one-body model, calibrated to numerical relativity to include the merger and ringdown, is used for total masses greater than 4 $M_{\odot}$. The effects of spin precession, matter, orbital eccentricity and radiation modes beyond the quadrupole are neglected. In contrast to the template bank used to search for compact binary mergers in Advanced LIGO's first observing run, here we are including binary-black-hole systems with total mass up to several hundreds of solar masses, thereby improving the ability to observe such systems. We introduce a technique to vary the starting frequency of waveform filters so that our bank can simultaneously contain binary-neutron-star and high-mass binary-black hole waveforms. We also introduce a lower-bound on the filter waveform length, to exclude very short-duration, high-mass templates whose sensitivity is strongly reduced by the characteristics and performance of the interferometers.