Testing general relativity using gravitational wave signals from the inspiral, merger and ringdown of binary black holes
Testing general relativity using gravitational wave signals from the inspiral, merger and ringdown of binary black holes
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使用来自双黑洞吸气、合并和衰荡的引力波信号测试广义相对论
DOI：
10.1088/1361-6382/aa972e
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发表时间：
2017
影响因子：
3.5
通讯作者：
L. London
中科院分区：
文献类型：
--
作者：
A. Ghosh;N. Johnson;A. Ghosh;C. Mishra;P. Ajith;W. D. Pozzo;C. Berry;A. Nielsen;L. London
Advanced LIGO 最近对合并双黑洞产生的引力波 (GW) 进行了观测，开辟了一个独特的实验室来测试高度相对论体系中的广义相对论 (GR)。用于确定第一个 LIGO 事件与 GR 预测的双黑洞合并的一致性的测试之一是吸气-合并-振铃一致性测试。这涉及从观测到的信号的吸气（低频）部分推断残余黑洞的质量和自旋，并检查推断参数与从信号的吸气后（高频）部分估计的相同参数的一致性。根据观测到的双黑洞合并速率，我们预计先进的引力波天文台在其设计灵敏度下每年观测到数百次双黑洞合并，其中大多数具有适度的信噪比（SNR）。预见到这样的观察结果，本文展示了如何将来自大量具有适度 SNR 的事件的约束结合起来，以对 GR 的偏差产生强有力的约束。使用 kludge 修改的 GR 波形，我们演示了该测试如何识别某些类型的 GR 偏差（如果信号波形中存在此类偏差）。我们还研究了该测试针对各种不同分析参数的合理变化的稳健性。
Advanced LIGO’s recent observations of gravitational waves (GWs) from merging binary black holes have opened up a unique laboratory to test general relativity (GR) in the highly relativistic regime. One of the tests used to establish the consistency of the first LIGO event with a binary black hole merger predicted by GR was the inspiral-merger-ringdown consistency test. This involves inferring the mass and spin of the remnant black hole from the inspiral (low-frequency) part of the observed signal and checking for the consistency of the inferred parameters with the same estimated from the post-inspiral (high-frequency) part of the signal. Based on the observed rate of binary black hole mergers, we expect the advanced GW observatories to observe hundreds of binary black hole mergers every year when operating at their design sensitivities, most of them with modest signal to noise ratios (SNRs). Anticipating such observations, this paper shows how constraints from a large number of events with modest SNRs can be combined to produce strong constraints on deviations from GR. Using kludge modified GR waveforms, we demonstrate how this test could identify certain types of deviations from GR if such deviations are present in the signal waveforms. We also study the robustness of this test against reasonable variations of a variety of different analysis parameters.
具有通用自旋、偏心率、质量比和致密性的双中子星：准平衡序列和首次演化
影响因子：
5
作者：
T. Dietrich;N. Moldenhauer;N. K. Johnson-McDaniel;S. Bernuzzi;C. M. Markakis;B. Brügmann;W. Tichy
通讯作者：
W. Tichy