Initial data and eccentricity reduction toolkit for binary black hole numerical relativity waveforms
Initial data and eccentricity reduction toolkit for binary black hole numerical relativity waveforms
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DOI：
10.1088/1361-6382/abe691
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发表时间：
2020-11
影响因子：
3.5
通讯作者：
Sarah Habib;A. Ramos-Buades;Eliu Huerta;S. Husa;R. Haas;Z. Etienne
中科院分区：
文献类型：
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作者：
Sarah Habib;A. Ramos-Buades;Eliu Huerta;S. Husa;R. Haas;Z. Etienne
描述准圆形二元黑洞合并的数值相对论波形的产生需要高质量的初始数据，以及迭代减少剩余偏心率的算法。到目前为止，这些工具仍然是封闭源代码，或者在商业软件中，这阻止了它们在高性能计算平台中的使用。为了解决这些限制，并确保更广泛的数值相对论社区可以使用这些工具，我们在这里提供了在超级计算机平台上产生高质量数值相对论模拟所需的所有元素，即：开源参数文件，用于数值模拟具有非对称质量比的旋转黑洞双星;开源Python工具，用于产生高质量的初始数据，用于准圆形轨道上旋转黑洞双星的数值相对论模拟;以及用于减少偏心率的开源Python工具，既可以作为独立软件，也可以部署在Einstein Toolkit的软件基础设施中。当数值相对论在引力波源的研究和解释中发挥着越来越大的作用时，这个开源工具包填补了文献中的空白。作为我们社区建设工作的一部分，为了简化和加速这些资源的使用，我们提供了教程，逐步描述如何获得和使用这些开源数值相对论工具。
The production of numerical relativity waveforms that describe quasi-circular binary black hole mergers requires high-quality initial data, and an algorithm to iteratively reduce residual eccentricity. To date, these tools remain closed source, or in commercial software that prevents their use in high performance computing platforms. To address these limitations, and to ensure that the broader numerical relativity community has access to these tools, herein we provide all the required elements to produce high-quality numerical relativity simulations in supercomputer platforms, namely: open source parameter files to numerically simulate spinning black hole binaries with asymmetric mass-ratios; open source Python tools to produce high-quality initial data for numerical relativity simulations of spinning black hole binaries on quasi-circular orbits; and open source Python tools for eccentricity reduction, both as stand-alone software and also deployed in the Einstein Toolkit’s software infrastructure. This open source toolkit fills in a void in the literature at a time when numerical relativity has an ever increasing role in the study and interpretation of gravitational wave sources. As part of our community building efforts, and to streamline and accelerate the use of these resources, we provide tutorials that describe, step by step, how to obtain and use these open source numerical relativity tools.