High Energy Collisions of Black Holes Numerically Revisited
High Energy Collisions of Black Holes Numerically Revisited
复制标题
黑洞高能碰撞的数值研究
DOI：
10.1103/physrevd.94.104020
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发表时间：
2015
影响因子：
5
通讯作者：
Y. Zlochower
中科院分区：
文献类型：
--
作者：
J. Healy;Ian Ruchlin;C. Lousto;Y. Zlochower
我们使用完全非线性数值相对论技术来研究非旋转、等质量黑洞的高能正面碰撞，以估计这些系统发出的最大引力辐射。我们的模拟包括初始数据构建、后续完整数值演化以及无穷远波形计算的改进。新的初始数据显着减少了杂散辐射含量，使初始速度更接近光速，即 $v\sim0.99c$。使用这些新技术，我们估计正面碰撞的最大辐射能量为$E_{\text{max}}/M_{\text{ADM}}=0.13\pm0.01$。该值与二阶微扰 $(0.164)$ 和零频率限制 $(0.17)$ 解析计算不同，但接近于通过热力学参数 $(0.134)$ 和之前的数值估计 $(0.14\pm0.03)$ 获得的值。
We use fully nonlinear numerical relativity techniques to study high energy head-on collision of nonspinning, equal-mass black holes to estimate the maximum gravitational radiation emitted by these systems. Our simulations include improvements in the construction of initial data, subsequent full numerical evolutions, and the computation of waveforms at infinity. The new initial data significantly reduces the spurious radiation content, allowing for initial speeds much closer to the speed of light, i.e. $v\sim0.99c$. Using these new techniques, We estimate the maximum radiated energy from head-on collisions to be $E_{\text{max}}/M_{\text{ADM}}=0.13\pm0.01$. This value differs from the second-order perturbative $(0.164)$ and zero-frequency-limit $(0.17)$ analytic computations, but is close to those obtained by thermodynamic arguments $(0.134)$ and by previous numerical estimates $(0.14\pm0.03)$.