反冲黑洞的模拟：自适应网格加密和辐射转移
Simulations of recoiling black holes: adaptive mesh refinement and radiative transfer
摘要：
（节略）我们在这里继续我们的努力，建立一个新的数值代码，采用先进的技术，适合解决广义相对论流体动力学方程的行为时，轨道或吸积到一个通用的黑洞。新的代码采用了一些高分辨率的冲击捕捉黎曼解算器和重建算法，利用AMR技术的提高精度和降低计算成本。此外，该代码利用了复杂的射线追踪库，再加上广义相对论辐射传输计算，使我们能够准确计算这种吸积流的电磁辐射。我们验证了新的代码提出了一系列广泛的固定吸积流无论是在球形或轴对称，并在2D或3D。此外，我们还考虑了超大质量黑洞双星与其周围的环双星盘相互作用并合时产生反冲黑洞的高度非线性情形。通过这种方式，我们可以提出，第一次，射线跟踪图像的冲击流体和光变曲线产生一致的广义相对论辐射输运计算从这个过程。这里提出的工作奠定了基础的通用计算基础设施，采用AMR技术处理准确和自我一致的吸积流到紧凑的对象。除了准确处理的问题，我们提供了一个自洽的电磁辐射从这些情况下解决相关的辐射传输问题。虽然磁场目前被排除在我们的分析之外，但这里提出的工具可以有许多应用程序来研究黑洞或中子星上的吸积流。
英文摘要：
(Abridged) We here continue our effort to model the behaviour of matter when orbiting or accreting onto a generic black hole by developing a new numerical code employing advanced techniques geared solve the equations of in general-relativistic hydrodynamics. The new code employs a number of high-resolution shock-capturing Riemann-solvers and reconstruction algorithms, exploiting the enhanced accuracy and the reduced computational cost of AMR techniques. In addition, the code makes use of sophisticated ray-tracing libraries that, coupled with general-relativistic radiation-transfer calculations, allow us to compute accurately the electromagnetic emissions from such accretion flows. We validate the new code by presenting an extensive series of stationary accretion flows either in spherical or axial symmetry and performed either in 2D or 3D. In addition, we consider the highly nonlinear scenario of a recoiling black hole produced in the merger of a supermassive black hole binary interacting with the surrounding circumbinary disc. In this way we can present, for the first time, ray-traced images of the shocked fluid and the light-curve resulting from consistent general-relativistic radiation-transport calculations from this process. The work presented here lays the ground for the development of a generic computational infrastructure employing AMR techniques to deal accurately and self-consistently with accretion flows onto compact objects. In addition to the accurate handling of the matter, we provide a self-consistent electromagnetic emission from these scenarios by solving the associated radiative-transfer problem. While magnetic fields are presently excluded from our analysis, the tools presented here can have a number of applications to study accretion flows onto black holes or neutron stars.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
