论文标题
从黑洞合并信号中提取重力后坐力
Extracting the Gravitational Recoil from Black Hole Merger Signals
论文作者
论文摘要
重力波带有能量，角动量和线性动量。在通用的二进制黑洞合并中，线性动量的损失赋予了后坐力或“踢”，将其赋予残留的黑洞。我们利用重力波形和残余黑洞建模的最新进展，从重力波信号中提取有关踢球的信息。诸如此类的踢测量在天体物理上是有价值的，因此对第二代合并率产生了独立的约束。此外，我们表明，必须将踢球纳入对未来对第三代重力波探测器的一般相对论的响声测试，以避免有系统的偏见。我们发现，尽管几乎没有关于现有重力波事件的踢球的信息，但随着检测器的改善，有趣的测量很快就会成为可能。我们表明，一旦Ligo和处女座达到他们的设计敏感性，我们将可靠地提取踢速度，以进行一定的进攻性二进制组，包括所谓的Superkicks，达到5000 km/s。
Gravitational waves carry energy, angular momentum, and linear momentum. In generic binary black hole mergers, the loss of linear momentum imparts a recoil velocity, or a "kick", to the remnant black hole. We exploit recent advances in gravitational waveform and remnant black hole modeling to extract information about the kick from the gravitational wave signal. Kick measurements such as these are astrophysically valuable, enabling independent constraints on the rate of second-generation mergers. Further, we show that kicks must be factored into future ringdown tests of general relativity with third-generation gravitational wave detectors to avoid systematic biases. We find that, although little information can be gained about the kick for existing gravitational wave events, interesting measurements will soon become possible as detectors improve. We show that, once LIGO and Virgo reach their design sensitivities, we will reliably extract the kick velocity for generically precessing binaries--including the so-called superkicks, reaching up to 5000 km/s.
