论文标题
磁场中磁场和观察到的磁性活性的磁场的双极衰变
Ambipolar decay of magnetic field in magnetars and the observed magnetar activities
论文作者
论文摘要
磁铁是相对较年轻的中子星，具有超强表面磁场的范围内$ 10^{14-16} $G。旧的中子星的表面磁场有些少于$ \ sim 10^8 $ g，这清楚地表明了随时间的衰减。磁场衰减的一种可能的方法是双极扩散。我们描述了求解恒星核心内部的双极速度的一般程序，而无需任何近似值。使用中子星的现实模型，我们确定了中子星核内的双极速度构型，因此找到了与磁场观测值一致的双极衰变速率和时间尺度。
Magnetars are comparatively young neutron stars with ultra-strong surface magnetic field in the range $10^{14-16}$ G. The old neutron stars have surface magnetic field some what less $\sim 10^8$ G which clearly indicates the decay of field with time. One possible way of magnetic field decay is by ambipolar diffusion. We describe the general procedure to solve for the ambipolar velocity inside the star core without any approximation. With a realistic model of neutron star we determine the ambipolar velocity configuration inside the neutron star core and hence find the ambipolar decay rate and time scale which is consistent with the magnetar observations.
