论文标题
Ergomagnetosphere，射血盘，M87中的磁磁盘。我的质量，角动量，能量和电流的全球流动
Ergomagnetosphere, Ejection Disc, Magnetopause in M87. I Global Flow of Mass, Angular Momentum, Energy and Current
论文作者
论文摘要
我们解释了M87中黑洞的事件地平线望远镜进行的1.3mm VLBI观察结果。有人提出，观察到的环形环不是吸收气体的圆环，而是一种旋转的，磁性主导的梯形磁层，可以通过大型磁性扭矩和小规模的不稳定性的组合将电磁角动量和能量向外传输到盘中。进一步提出，可以通过磁通量将长波长电磁障碍的有效发射到负能轨道上，从而通过磁通量螺纹来提取能量，当时不变的$ b^2-e^2 $变为负能量轨道。这样，旋转的黑洞及其巨石不仅为喷气机提供动力，而且还为弹出盘供电，从而驱逐了邦迪半径附近提供的大多数气体。此流出采用了MHD风的形式，它延伸了数十年的半径，并具有单向磁场，这是由于磁磁横跨磁场上的插入气体准入的。反过来，这种风又使相对论的喷气机直接发出，并且从射流鞘中观察到的发射可能与回流电流有关。提出和讨论了从地平线到邦迪半径的尺度上的质量，角动量，能量和电流的全局流动的模型。
We interpret the 1.3mm VLBI observations made by the Event Horizon Telescope of the black hole in M87. It is proposed that, instead of being a torus of accreting gas, the observed annular ring is a rotating, magnetically-dominated ergomagnetosphere that can transmit electromagnetic angular momentum and energy outward to the disc through a combination of large scale magnetic torque and small scale instabilities. It is further proposed that energy can be extracted by magnetic flux threading the ergosphere through the efficient emission of long wavelength electromagnetic disturbances onto negative energy orbits, when the invariant $B^2-E^2$ becomes negative. In this way, the spinning black hole and its ergosphere not only power the jets but also the ejection disc so as to drive away most of the gas supplied near the Bondi radius. This outflow takes the form of a MHD wind, extending over many decades of radius, with a unidirectional magnetic field, that is collimated by the infalling gas across a magnetopause. This wind, in turn, collimates the relativistic jets and the emission observed from the jet sheath may be associated with a return current. A model for the global flow of mass, angular momentum, energy and current, on scales from the horizon to the Bondi radius, is presented and discussed.
