Assessing the readiness of numerical relativity for LISA and 3G detectors

Assessing the readiness of numerical relativity for LISA and 3G detectors
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评估 LISA 和 3G 探测器的数值相对论准备情况

DOI:
10.1103/physrevd.104.044037
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发表时间:
2021
期刊:
影响因子:
5
通讯作者:
Shoemaker, Deirdre
Shoemaker, Deirdre
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Ferguson, Deborah;Jani, Karan;Laguna, Pablo;Shoemaker, Deirdre

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未来的探测器,如激光干涉仪空间天线,有望实现数千个信噪比,并且数据包含同步信号。准确的数值相对论波形对于最大化科学回报至关重要。广大引力波界感兴趣的一个问题是:数值相对论代码是否准备好应对这一挑战?为了回答这个问题,我们提供了一个新的标准来确定模拟必须具有的最小分辨率作为信噪比的函数,以使数值相对论波形与真实信号无法区分。该标准可以应用于任何有限差分数值相对论代码,并对所需的二进制参数和波形长度进行不同分辨率的多次模拟。我们将此标准应用于具有四阶 MAYA 代码的感兴趣的二进制系统,以获得模拟必须为下一代探测器做好准备的最小分辨率的第一个估计。
Future detectors such as the Laser Interferometer Space Antenna promise signal-to-noise ratios potentially in the thousands and data containing simultaneous signals. Accurate numerical relativity waveforms will be essential to maximizing the science return. A question of interest to the broad gravitational wave community is: Are the numerical relativity codes ready to face this challenge? Towards answering this question, we provide a new criteria to identify the minimum resolution a simulation must have as a function of signal-to-noise ratio in order for the numerical relativity waveform to be indistinguishable from a true signal. This criteria can be applied to any finite-differencing numerical relativity code with multiple simulations of differing resolutions for the desired binary parameters and waveform length. We apply this criteria to binary systems of interest with the fourth-orderMAYAcode to obtain the first estimate of the minimum resolution a simulation must have to be prepared for next generation detectors.
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