论文标题
分辨率对喷气机的黑洞积聚模拟的影响
The Effects of Resolution on Black Hole Accretion Simulations of Jets
论文作者
论文摘要
我们对黑洞积聚的三个普通磁性水力动力学模拟，旨在测试射流区域中敏感结果的敏感结果。这些病例仅在数字方面有所不同，对辐射效率低下，几何厚，磁性停滞的流动的相同物理场景进行建模。用最高网格推断出的属性通常与具有较高分辨率的发现的属性一致，包括总射流功率及其分解为不同形式，速度结构，非轴对称结构以及已解决的毫米图图像的出现。一些可变性和磁化的度量对分辨率敏感。我们得出的结论是，通过限制喷气机附近的分辨率以获得计算权宜之计获得的大多数结果仍然应该是可靠的，至少在没有较细的网格的情况下不会改进它们。
We perform three general-relativistic magnetohydrodynamic simulations of black hole accretion designed to test how sensitive results are to grid resolution in the jet region. The cases differ only in numerics, modelling the same physical scenario of a radiatively inefficient, geometrically thick, magnetically arrested flow onto a rapidly spinning black hole. Properties inferred with the coarsest grid generally agree with those found with higher resolutions, including total jet power and its decomposition into different forms, velocity structure, nonaxisymmetric structure, and the appearance of resolved millimetre images. Some measures of variability and magnetization are sensitive to resolution. We conclude that most results obtained by limiting resolution near the jet for computational expediency should still be reliable, at least insofar as they would not be improved with a finer grid.
