The essence of the Blandford-Znajek process
The essence of the Blandford-Znajek process
复制标题
Blandford-Znajek 工艺的本质
DOI：
10.1093/ptep/pty024
复制
发表时间：
2018
影响因子：
3.5
通讯作者：
Kinoshita Shunichiro，Igata Takahisa
中科院分区：
文献类型：
--
作者：
Y. Uesaka;Y. Kuno;J. Sato;T. Sato;M. Yamanaka;Kinoshita Shunichiro，Igata Takahisa
从时空角度来看，无力电磁场的磁力线动力学可以重写为与弦动力学非常相似的形式，即“场片”动力学。使用这种形式主义，我们明确地表明，静止和轴对称无力电磁场的场片与刚性旋转的南部-后藤弦的世界片具有相同的内在属性。因此，我们得出结论，Blandford-Znajek 过程在运动学上与具有有效磁张力的 Nambu-Goto 弦的能量提取机制相同。
From a spacetime perspective, the dynamics of magnetic field lines of force-free electromagnetic fields can be rewritten into a quite similar form for the dynamics of strings, i.e., dynamics of “field sheets”. Using this formalism, we explicitly show that the field sheets of stationary and axisymmetric force-free electromagnetic fields have identical intrinsic properties to the world sheets of rigidly rotating Nambu–Goto strings. Thus, we conclude that the Blandford–Znajek process is kinematically identical to an energy-extraction mechanism by the Nambu–Goto string with an effective magnetic tension.