偏心自旋前处理双黑洞凝聚的有效单体数值相对论波形模型

IF 3.6 3区 物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS
Xiaolin Liu, Zhoujian Cao and Zong-Hong Zhu
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引用次数: 0

摘要

波形模型对于引力波数据分析非常重要。最近,人们开始关注偏心双黑洞(BBH)凝聚的波形模型构建。目前已经构建了几种偏心双黑洞凝聚的有效单体(EOB)数值相对论波形模型。但它们都无法同时处理轨道偏心和自旋前处理问题。本文就是针对这一问题进行研究的。作者之前已经构建了自旋对齐偏心BBH凝聚SEOBNRE的波形模型。在这里,我们将这种波形模型扩展到描述偏心自旋前处理BBH凝聚。我们计算了2PN轨道辐射反作用力和EOB坐标下一般自旋前冲BBH系统的分解波形的瞬时部分。我们根据之前的 SEOBNRE 波形模型实现了这些结果。我们还将我们的模型波形与 SXS 和 RIT 数字相对论波形进行了比较。我们发现我们的模型与数值相对论之间具有良好的一致性。基于我们的新波形模型,我们分析了非垂直自旋贡献对波形精度的影响。我们发现,非垂直自旋贡献主要影响引力波波形的相位。对于目前的引力波探测器来说,这种贡献并不显著。未来的探测器可能会受到这种非垂直自旋贡献的影响。更重要的是,我们的 SEOBNRE 波形模型作为第一个描述偏心自旋前冲 BBH 凝聚的理论波形模型,可以帮助人们同时分析引力波探测数据的轨道偏心率和自旋前冲。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effective-one-body numerical-relativity waveform model for eccentric spin-precessing binary black hole coalescence
Waveform models are important to gravitational wave data analysis. People recently pay much attention to the waveform model construction for eccentric binary black hole (BBH) coalescence. Several effective-one-body (EOB) Numerical-Relativity waveform models of eccentric BBH coalescence have been constructed. But none of them can treat orbit eccentricity and spin-precessing simultaneously. The current paper focuses on this problem. The authors previously have constructed waveform model for spin-aligned eccentric BBH coalescence SEOBNRE. Here we extend such waveform model to describe eccentric spin-precessing BBH coalescence. We calculate the 2PN orbital radiation-reaction forces and the instantaneous part of the decomposed waveform for a general spinning precessing BBH system in EOB coordinates. We implement these results based on our previous SEOBNRE waveform model. We have also compared our model waveforms to both SXS and RIT numerical relativity waveforms. We find good consistency between our model and numerical relativity. Based on our new waveform model, we analyze the impact of the non-perpendicular spin contributions on waveform accuracy. We find that the non-perpendicular spin contributions primarily affect the phase of the gravitational waveforms. For the current gravitational wave detectors, this contribution is not significant. The future detectors may be affected by such non-perpendicular spin contributions. More importantly our SEOBNRE waveform model, as the first theoretical waveform model to describe eccentric spin-precessing BBH coalescence, can help people to analyze orbit eccentricity and spin precession simultaneously for gravitational wave detection data.
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来源期刊
Classical and Quantum Gravity
Classical and Quantum Gravity 物理-天文与天体物理
CiteScore
7.00
自引率
8.60%
发文量
301
审稿时长
2-4 weeks
期刊介绍: Classical and Quantum Gravity is an established journal for physicists, mathematicians and cosmologists in the fields of gravitation and the theory of spacetime. The journal is now the acknowledged world leader in classical relativity and all areas of quantum gravity.
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