A semianalytic Fisher matrix for precessing binaries with a single significant spin

A semianalytic Fisher matrix for precessing binaries with a single significant spin
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用于处理具有单个显着自旋的双星的半解析费希尔矩阵

DOI:
10.1088/1361-6382/ab7199
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发表时间:
2020
影响因子:
3.5
通讯作者:
Lundgren, A
Lundgren, A
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
O’Shaughnessy, Richard;Nepal, Prakash;Lundgren, A

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引力波从一个单一的动态显着自旋的二进制,特别是包括进动黑洞中子星星二进制,让我们限制该二进制的属性:两个质量和主导黑洞自旋。基于一个简单的傅立叶变换的启用的共转框架,我们表明,处理二进制的Fisher矩阵可以很好地近似一个非常简单的半解析近似。这种近似可以很容易地理解为独立信息通道的加权平均,每个通道与一个引力波谐波相关。概括以前的研究nonprecessing二进制文件,包括关键的破坏性的进动效应,需要了解合理的天体物理学来源,我们的分析可以应用于解决如何以及引力波测量可以解决广泛的天体物理学和基本问题。这种Fisher矩阵方法提供了一种简单的方法来评估引力波探测器可以测量什么参数,测量效果如何以及为什么。我们的研究是第一个分析听话的Fisher矩阵计算处理二进制。
Gravitational waves from a binary with a single dynamically significant spin, notably including precessing black hole-neutron star binaries, let us constrain that binary's properties: the two masses and the dominant black hole spin. Based on a straightforward fourier transform of enabled by the corotating frame, we show the Fisher matrix for precessing binaries can be well-approximated by an extremely simple semianalytic approximation. This approximation can be easily understood as a weighted average of independent information channels, each associated with one gravitational wave harmonic. Generalizing previous studies of nonprecessing binaries to include critical symmetry-breaking precession effects required to understand plausible astrophysical sources, our ansatz can be applied to address how well gravitational wave measurements can address a wide range of astrophysical and fundamental questions. This Fisher matrix approach provides a simple method to assess what parameters gravitational wave detectors can measure, how well, and why. Our study is the first analytically-tractable Fisher matrix calculation for precessing binaries.
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用于处理旋转致密物体的双星进动的准物理重力波模板族:在双自旋进动双星中的应用
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