论文标题
超级质量黑洞周围磁层重新连接驱动的辐射的图像
Images of magnetospheric reconnection-powered radiation around supermassive black holes
论文作者
论文摘要
现在，可以在MM波长的事件 - 趣味量表上观察到超大型黑洞。当前对图像的预测取决于假设（流体建模，热电子），该假设可能并不总是在黑洞附近保存，因此可以进行全面的动力学处理。在这封信中，我们描述了黑孔磁层的第一个3D全局一般性粒子粒子中的模拟。该系统显示持续的赤道电流表。合成图像是通过通过磁重新连接在当前纸上加速的非热粒子的射线追踪同步加速器发射来计算的。我们在中等视角处识别图像的几个时间依赖性特征：环的可变半径，以及沿其移动的热点。在此制度中，我们的模型预测图像的大部分磁通都位于临界曲线内。这些结果可以有助于理解以改善时间和空间分辨率的黑洞磁层的未来观察。
Accreting supermassive black holes can now be observed at the event-horizon scale at mm wavelengths. Current predictions for the image rely on hypotheses (fluid modeling, thermal electrons) which might not always hold in the vicinity of the black hole, so that a full kinetic treatment is in order. In this letter, we describe the first 3D global general-relativistic particle-in-cell simulation of a black-hole magnetosphere. The system displays a persistent equatorial current sheet. Synthetic images are computed by ray-tracing synchrotron emission from nonthermal particles accelerated in this current sheet by magnetic reconnection. We identify several time-dependent features of the image at moderate viewing angles: a variable radius of the ring, and hot spots moving along it. In this regime, our model predicts that most of the flux of the image lies inside the critical curve. These results could help understand future observations of black-hole magnetospheres at improved temporal and spatial resolution.
