论文标题
研究Ligo-Virgo目录GWTC-1的二进制黑洞信号的偏心率
Investigating eccentricities of the binary black hole signals from the LIGO-Virgo catalog GWTC-1
论文作者
论文摘要
在Ligo和处女座的第一个重力波瞬时目录中，所有事件均宣布为零偏心率。在本文中，我们研究了Seobnre的性能，Seobnre是时间域中与自旋对齐的偏心波形模型。通过与SXS库中的所有偏心波形进行比较，我们发现SEOBNRE与数值相对性数据完美吻合。我们采用Seobnre，重新估计全黑洞合并事件的怪异性。我们发现，这些事件中的大多数允许在10 Hz频段存在初始偏心率，但在观察到的频率（$ \ gtrsim 20 $ hz）处完全循环。 Ligo和下一代检测器的即将更新如Einstein望远镜，将观察到从10 Hz甚至更低的引力波。如果偏心率在较低的频率下存在，则可能会显着支持球状簇中发生的动态形成机制。
In the first Gravitational-Wave Transient Catalogue of LIGO and Virgo, all events are announced having zero eccentricity. In the present paper, we investigate the performance of SEOBNRE which is a spin-aligned eccentric waveform model in time-domain. By comparing with all the eccentric waveforms in SXS library, we find that the SEOBNRE coincides perfectly with numerical relativity data. Employing the SEOBNRE, we re-estimate the eccentricities of all black hole merger events. We find that most of these events allow a possibility for existence of initial eccentricities at 10 Hz band, but are totally circularized at the observed frequency ($ \gtrsim 20$ Hz). The upcoming update of LIGO and the next generation detector like as Einstein Telescope, will observe the gravitational waves starting at 10 Hz or even lower. If the eccentricity exists at the lower frequency, it may significantly support the dynamical formation mechanism taking place in globular clusters.
