论文标题
黑洞积聚的观察性特征：旋转与球形流的倾斜磁场
Observational Signatures of Black Hole Accretion: Rotating vs. Spherical Flows with Tilted Magnetic Fields
论文作者
论文摘要
我们研究了磁性捕获的黑洞积聚的观察性特征，而没有旋转的流入到旋转的黑洞上。我们考虑黑洞自旋与初始磁场方向之间的一系列角度。我们将一般相对论磁动力学模拟的结果与更常用的旋转初始条件以及事件范围望远镜望远镜（EHT）观测值进行比较。我们发现，当使用相同的电子温度模型进行后处理时，在不同模拟中，MM强度图像，极化图像和同步子发射光谱非常相似。由于不同的电子温度模型而引起的观察差异明显大于磁性捕获的吸积的实现不同。 MM同步支化极化的方向对初始磁场方向，电子温度模型和流入血浆的旋转尤其不敏感。具有不同初始旋转和磁性倾斜的模拟中最大的差异在于射流的强度和稳定性。球形流入会导致扭结变速器。我们讨论了结果对当前和未来的EHT观察的含义以及事件尺度的黑洞积聚的理论模型。
We study the observational signatures of magnetically arrested black hole accretion with non-rotating inflow onto a rotating black hole; we consider a range of angles between the black hole spin and the initial magnetic field orientation. We compare the results of our General Relativistic Magneto-Hydrodynamic simulations to more commonly used rotating initial conditions and to the Event Horizon Telescope (EHT) observations of M87. We find that the mm intensity images, polarization images, and synchrotron emission spectra are very similar among the different simulations when post-processed with the same electron temperature model; observational differences due to different electron temperature models are significantly larger than those due to the different realizations of magnetically arrested accretion. The orientation of the mm synchrotron polarization is particularly insensitive to the initial magnetic field orientation, the electron temperature model, and the rotation of the inflowing plasma. The largest difference among the simulations with different initial rotation and magnetic tilt is in the strength and stability of the jet; spherical inflow leads to kink-unstable jets. We discuss the implications of our results for current and future EHT observations and for theoretical models of event-horizon-scale black hole accretion.
