论文标题
用于进攻二进制黑洞的重力波峰值光度模型
Gravitational wave peak luminosity model for precessing binary black holes
论文作者
论文摘要
当两个黑洞合并时，在短时间内以重力辐射的形式释放了大量的能量，使此类事件成为宇宙中最明亮的现象。预测黑洞合并的峰值光度的模型对重力波群落感兴趣，并在一般相对性测试中使用了潜在的应用。我们为峰值光度提出了一个替代模型，该模型直接在进攻二进制黑洞的数值相对性模拟上训练。使用高斯过程回归，我们在具有质量比$ q \ leq4 $的进攻二维的7维参数空间中的峰值光度插值，并插入了自旋大小$χ_1，χ_2\ leq0.8 $。我们证明，估计峰值光度的错误低于现有拟合公式的错误。此外，我们构建了一个模型，用于具有质量比$ q \ leq8 $的对齐的自旋二进制文件的峰值光度，并构建了自旋大小$ |χ_{1z} |，|χ_{2Z} | \ leq0.8 $。我们应用进程模型来推断GW事件GW190521的峰值光度，并发现结果与先前的预测一致。
When two black holes merge, a tremendous amount of energy is released in the form of gravitational radiation in a short span of time, making such events among the most luminous phenomenon in the universe. Models that predict the peak luminosity of black hole mergers are of interest to the gravitational wave community, with potential applications in tests of general relativity. We present a surrogate model for the peak luminosity that is directly trained on numerical relativity simulations of precessing binary black holes. Using Gaussian process regression, we interpolate the peak luminosity in the 7-dimensional parameter space of precessing binaries with mass ratios $q\leq4$, and spin magnitudes $χ_1,χ_2\leq0.8$. We demonstrate that our errors in estimating the peak luminosity are lower than those of existing fitting formulae by about an order of magnitude. In addition, we construct a model for the peak luminosity of aligned-spin binaries with mass ratios $q\leq8$, and spin magnitudes $|χ_{1z}|,|χ_{2z}|\leq0.8$. We apply our precessing model to infer the peak luminosity of the GW event GW190521, and find the results to be consistent with previous predictions.
