脉冲星的非共转模型

本文讨论了脉冲星的磁层运动和能量状态。对于满足一定条件的脉冲星系统,证明了在极轴处的等离子体的角速度和电荷密度趋于零。提出了一个磁层与星体非共转的简单模型以及边界条件。利用变分原理,求得参数值,从而,得出了与参数相关的各个物理量,例如:等离子体的漂移速度v_D,等离子体与星体的相对滑动速度v_s,脉冲星的输出功率等。结果表明:功率值比较接近观测值,非共转的模型相对通常采用的共转模型而言是比较合理的。

The Noncorotation Model of a Pulsar

The motion of magnetosphere and the energy state of a pulsar is disscused. For the pulsar system which satisfies some conditions, we proved that the angular velocity of plasma and the charge density go to zero at the pole. A simple noncorotation model and boundary condition are given. From the above results, we obtained the parameter A using the variationalprinciple and got some physical quantites: such as the drift velocity of plasma, the relative sliding velocity Vs of plasma with star, and the output power of pulsar. The results show that the value of the power is close to the observed value. Therefore, the model of noncorotation is more plausible than the model of corotion.