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arXiv 1012.5172gr-qc
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自旋合并双星的唯象引力波形

Phenomenological gravitational waveforms from spinning coalescing binaries

R. Sturani, S. Fischetti, L. Cadonati, G. M. Guidi, J. Healy, D. Shoemaker, A. Vicere'

摘要:

准确了解合并的二元引力波形对于LIGO-Virgo合作进行的实验搜索至关重要。在同一作者的早期论文之后,我们改进了描述来源于一般自旋二进制系统的信号的分析唯象波形的构造。初始inspiral部分的波形,所描述的自旋泰勒近似,和它的最终衰荡部分,所描述的阻尼指数,之间的差距是桥接的现象相校准的比较与一组波形,包括不同类型的数值和现象的波形的主导球谐模式。所考虑的所有波形都描述了等质量系统。这里给出的数值波形和现象波形之间的高级LIGO噪声加权重叠积分范围在0.95和0.99之间,适用于宽范围的质量值。

英文摘要:

An accurate knowledge of the coalescing binary gravitational waveform is crucial for experimental searches as the ones performed by the LIGO-Virgo collaboration. Following an earlier paper by the same authors we refine the construction of analytical phenomenological waveforms describing the signal sourced by generically spinning binary systems. The gap between the initial inspiral part of the waveform, described by spin-Taylor approximants, and its final ring-down part, described by damped exponentials, is bridged by a phenomenological phase calibrated by comparison with the dominant spherical harmonic mode of a set of waveforms including both numerical and phenomenological waveforms of different type. All waveforms considered describe equal mass systems. The Advanced LIGO noise-weighted overlap integral between the numerical and phenomenological waveforms presented here ranges between 0.95 and 0.99 for a wide span of mass values.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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