论文标题
偏心二进制的重力波推断：根本的论点
Gravitational-wave inference for eccentric binaries: the argument of periapsis
论文作者
论文摘要
来自二进制黑洞合并的重力波使我们能够首次直接观察出恒星质量的黑洞二进制物，因此探索了它们的地层通道。推断二进制系统如何组装方式的方法之一是测量系统的轨道偏心率。当前的参数估计方法不包括偏心系统的所有物理效应，例如自旋诱导的进动，高阶模式以及围per的初始论点：描述轨道椭圆方向的角度。我们探讨了细胞症的论点如何改变重力波形并研究其对天体物理参数推断的影响。我们使用偏心旋转的波形TeoBresum和Seobnre来测量波形的变化，因为围产期的参数已更改。我们发现，细胞症的论点可能已经在影响用teobresum进行的分析。但是，在可预见的将来，仅对于Ligo-virgo-kagra观察到的最大的事件，它可能是可以预见的。在以前未考虑细胞症论点的先前低含量分析中的系统误差可能很小。
Gravitational waves from binary black hole mergers have allowed us to directly observe stellar-mass black hole binaries for the first time, and therefore explore their formation channels. One of the ways to infer how a binary system is assembled is by measuring the system's orbital eccentricity. Current methods of parameter estimation do not include all physical effects of eccentric systems such as spin-induced precession, higher-order modes, and the initial argument of periapsis: an angle describing the orientation of the orbital ellipse. We explore how varying the argument of periapsis changes gravitational waveforms and study its effect on the inference of astrophysical parameters. We use the eccentric spin-aligned waveforms TEOBResumS and SEOBNRE to measure the change in the waveforms as the argument of periapsis is changed. We find that the argument of periapsis could already be impacting analyses performed with TEOBResumS. However, it is likely to be well-resolvable in the foreseeable future only for the loudest events observed by LIGO--Virgo--KAGRA. The systematic error in previous, low-eccentricity analyses that have not considered the argument of periapsis is likely to be small.
