标题： 脉冲星中的内真空间隙形成和漂移次脉冲 显示英文标题

标题： Inner vacuum gap formation and drifting subpulses in pulsars

摘要： 考虑了中子星内真空间隙形成的问题，其中涉及 ${\bf\Omega}\cdot{\bf B}<0$。 通过条件 $T_i/T_s>1$ 进行论证，其中 $T_i$ 是表面 $^{56}_{26}$ 铁离子的熔化温度，$T_s$ 是极帽表面的实际温度，指出只要实际表面磁场极强 ($B_s\gtrsim 10^{13}$ 高斯) 并且弯曲 (${\cal R}<10^6$ 厘米)，就可以形成内真空间隙，而与从脉冲星自旋下降率测得的偶极分量值无关。 这些计算是针对具有漂移次脉冲和/或周期性强度调制的脉冲星进行的，在这些脉冲星中，准稳态真空间隙通过${\bf E}\times{\bf B}$漂移火花放电的存在几乎是不可避免的。 显示英文摘要

摘要： The problem of formation of the inner vacuum gap in neutron stars with ${\bf\Omega}\cdot{\bf B}<0$ is considered. It is argued by means of the condition $T_i/T_s>1$, where $T_i$ is the melting temperature of surface $^{56}_{26}$Fe ions and $T_s$ is the actual temperature of the polar cap surface, that the inner vacuum gap can form, provided that the actual surface magnetic field is extremaly strong ($B_s\gtrsim 10^{13}$ G) and curved (${\cal R}<10^6$ cm), irrespective of the value of dipolar component measured from the pulsar spin down rate. The calculations are carried out for pulsars with drifting subpulses and/or periodic intensity modulations, in which the existence of the quasi steady vacuum gap discharging via ${\bf E}\times{\bf B}$ drifting sparks is almost unavoidable.