论文标题
偏心对:来自椭圆轨道二元黑洞的分析引力波
Eccentric Pairs: Analytic Gravitational Waves from Binary Black Holes in Elliptic Orbits
论文作者
论文摘要
来自偏心二进制文件的重力波(GW)具有复杂的信号,编码有关源的位置,创建和演变的重要特征。偏心率缩短了合并时间,一旦检测器达到所需的灵敏度,在观察到的数据中发出的GW统计学占主导地位。我们提出了从\ texttt {Wolfram Mathematica}软件中的怪异二进制黑洞(BBH)合并的全面分析GW模板的新颖实现。我们通过识别和最小化可能的错误来源来提高准确性。我们首先概述了与偏心合并有关的物理学的概述,然后通过采用多达六个牛顿后(PN)校正来组装Inspiral的压力。我们以频率,振幅和相位的准圆向后(BOB)合并模型来完成怪异的灵感,然后我们为二进制的整个演变构建了混合GW应变。对于低偏心性,我们在重叠中达到了巧合,而时间间隔没有歧义,这与通常的匹配技术相比有了显着的改善。对于高分子,我们通过引入幅度较小的重新缩放来弥补BOB方法的隐式准圆形假设。我们简化的实现与GW天文学的新领域有关,并且很容易理解,使用和扩展,为该领域的研究人员提供了宝贵的开放资源工具。
Gravitational waves (GW) from eccentric binaries have intricate signals encoding important features about the location, creation and evolution of the sources. Eccentricity shortens the merger time, making the emitted GW statistically predominant in the observed data once detectors will reach the required sensitivity. We present a novel implementation of fully analytical GW templates from eccentric binary black hole (BBH) mergers within the \texttt{Wolfram Mathematica} software. We increase the accuracy by identifying and minimizing the possible source of errors. We start with an overview of the physics involved in eccentric mergers, then assemble the strain for the inspiral by employing up to six post-Newtonian (PN) corrections. We complete the eccentric inspiral with the quasi-circular Backwards one Body (BoB) merger model in frequency, amplitude and phase, then we build the hybrid GW strain for the whole evolution of the binary. For low eccentricity we reach coincidence in the overlap, with no ambiguity in the time interval, a remarkable improvement from the usual matching techniques. For high-eccentricity we compensate for the implicit quasi-circular assumption of the BOB approach, by introducing a small rescaling in amplitude. Our streamlined implementation is relevant for the new field of GW astronomy and is straightforward to understand, use and extend, offering researchers in the field a valuable open resource tool.