标题： 脉冲星电动力学：一个未解决的问题 显示英文标题

标题： Pulsar Electrodynamics: an unsolved problem

摘要： 脉冲星电动力学被回顾，强调了倾斜旋转体中感应电场的作用以及电荷对平行分量的不完全屏蔽，从而留下“间隙”，带有$E_\parallel\ne0$。 等离子体的响应导致一个自洽的电场，该电场与势场互补，从而产生电漂移和与总场相关的极化电流。 电磁模型确定了电荷密度$\rho$和电流密度${\bf J}$，电荷匮乏指的是等离子体无法提供$\rho$的情况，导致间隙以及相关的粒子加速和正负电子生成。 指出也存在一种电流匮乏的形式，这意味着新的间隙类别。 讨论了间隙的特性，强调静态模型不稳定，大振幅纵向波的作用，以及在倾斜旋转体的间隙中出现的方位依赖性。 简要回顾了脉冲星等离子体中的波色散，强调其在射电辐射中的作用。 回顾了脉冲星射电辐射机制，并认为最合理的是一种等离子体辐射形式。 显示英文摘要

摘要： Pulsar electrodynamics is reviewed emphasizing the role of the inductive electric field in an oblique rotator and the incomplete screening of its parallel component by charges, leaving `gaps' with $E_\parallel\ne0$. The response of the plasma leads to a self-consistent electric field that complements the inductive electric field with a potential field leading to an electric drift and a polarization current associated with the total field. The electrodynamic models determine the charge density, $\rho$, and the current density, ${\bf J}$, charge starvation refers to situations where the plasma cannot supply $\rho$, resulting in a gap and associated particle acceleration and pair creation. It is pointed out that a form of current starvation also occurs implying a new class of gaps. The properties of gaps are discussed, emphasizing that static models are unstable, the role of large-amplitude longitudinal waves, and the azimuthal dependence that arises across a gap in an oblique rotator. Wave dispersion in a pulsar plasma is reviewed briefly, emphasizing its role in radio emission. Pulsar radio emission mechanisms are reviewed, and it is suggested that the most plausible is a form of plasma emission.