论文标题
来自黑洞合并信号的大升后速度的证据
Evidence of large recoil velocity from a black hole merger signal
论文作者
论文摘要
在二进制黑洞合并后留下的最后一个黑洞可以达到后坐力或“踢”，达到高达5000 km/s的值。这种现象对重力波天文学，黑洞形成情景，测试一般相对论和星系进化具有重要意义。我们考虑了来自二进制黑洞合并GW200129_065458（此后称为GW200129）的重力波信号，该信号已显示出有力的轨道进攻证据。使用数值相对性替代模型，我们将GW200129的踢速度限制为$ v_f \ sim 1542^{+747} _ { - 1098} $ km/s或$ km/s或$ v_f \ gtrsim 698 $ km/s（单层限制），以90 \％的\％\％\％。这标志着单个引力波事件的首次识别较大的踢速度。鉴于GW200129的踢速度，我们估计有不到$ 0.48 \％$（$ 7.7 \％$）的概率，即合并后残留的黑洞将由球（核星）群集保留。最后，我们表明，预计不会在此事件的一般相对性测试中引起踢作效应，尽管未来可能会随着检测器的改进而发生变化。
The final black hole left behind after a binary black hole merger can attain a recoil velocity, or a "kick", reaching values up to 5000 km/s. This phenomenon has important implications for gravitational wave astronomy, black hole formation scenarios, testing general relativity, and galaxy evolution. We consider the gravitational wave signal from the binary black hole merger GW200129_065458 (henceforth referred to as GW200129), which has been shown to exhibit strong evidence of orbital precession. Using numerical relativity surrogate models, we constrain the kick velocity of GW200129 to $v_f \sim 1542^{+747}_{-1098}$ km/s or $v_f \gtrsim 698$ km/s (one-sided limit), at 90\% credibility. This marks the first identification of a large kick velocity for an individual gravitational wave event. Given the kick velocity of GW200129, we estimate that there is a less than $0.48\%$ ($7.7\%$) probability that the remnant black hole after the merger would be retained by globular (nuclear star) clusters. Finally, we show that kick effects are not expected to cause biases in ringdown tests of general relativity for this event, although this may change in the future with improved detectors.
