AI 中文总结
该研究针对大质量比双黑洞模拟的高成本问题，通过Dendro-GR实现了质量比q=24、q=12带高自旋的双黑洞模拟，为引力波分析奠定了基础。
AI 中文摘要
激光干涉空间天线（LISA）将在十年内发射，它每年将探测到自旋大质量比双黑洞并合事件，同时还有其他第三代引力波探测器。大质量比系统处于数值相对论模拟计算成本高、技术要求高的区域，尤其是在进动方向的高自旋情况下，该参数空间部分仍未被充分采样，导致参数估计存在显著偏差，我们必须填补这些空白。本文报告了Dendro-GR在降低带自旋大质量比双黑洞计算成本方面的关键进展：我们首次演化了质量比q=24（无自旋）和q=12且两个黑洞自旋达χ=0.8的Dendro-GR双黑洞，覆盖多种构型。这些概念验证运行有力证明Dendro-GR可模拟该区域及更广泛情况，模拟生成了至ℓ=8多极模的准确引力波形，保持稳定、约束违反低且基本恒定、守恒视界质量，且计算效率高，墙钟时间成本相对较低。这些结果为系统探索引力波分析所需的大质量比、高自旋双黑洞系统奠定了起点。
英文摘要
The Laser Interferometer Space Antenna (LISA) launches in less than a decade; it will detect spinning high-mass-ratio binary black hole inspirals annually, alongside other third-generation gravitational wave detectors. High-mass-ratio systems occupy a regime where numerical-relativity simulations remain computationally expensive and technically demanding, especially with high spins at precessing orientations. This portion of parameter space thus remains undersampled, leading to significant bias in parameter estimation. We must close these gaps. Here we report key progress in Dendro-GR toward reducing the computational cost of high-mass-ratio binaries with spin. We evolve the first Dendro-GR binaries at mass ratio $q=24$ (nonspinning) and at $q=12$ with spins up to $χ=0.8$ on both black holes, spanning various configurations. These proof-of-concept runs show strong evidence that Dendro-GR can simulate in this regime and beyond. The simulations generate accurate gravitational waveforms through multipole modes up to $\ell=8$, remain stable, keep constraint violations low and largely constant, conserve horizon mass, and have high computational efficiency with relatively low wall-hour cost. These results establish our starting line for systematic exploration of the high-mass-ratio, high-spin binary black hole systems that are needed for gravitational wave analysis.
Comments18 pages, 18 figures
