论文标题
某些异常类型的脉冲星参数的比较
Comparison of pulsar parameters for some anomalous types
论文作者
论文摘要
针对两个无线电脉冲星的样本进行了参数的比较分析。第一个样品的物体具有P> 2秒，第二个是由中子星形表面$ BS> 4.4 \ times10^{13} $ G的磁场的特征。该分析的主要目的是找到正常的脉冲星和异常的X射线脉冲脉冲（AXP）和软伽马射线和软态值（SGR）（SGR）的一些差异。结果表明，长期脉冲星的时期衍生物对周期的依赖性为$ dp/dt \ propto p^{1.67} $。这意味着我们必须搜索与磁性偶极子不同的制动机制，该机构给出了$ dp/dt \ propto p^{ - 1} $或使用某些特定参数分布。另一方面，可以通过磁性偶极子模型来描述具有强磁场和AXP/SGR的无线电脉冲星。 p> 2秒的无线电脉冲星平均年龄要比$ bs> 4.4 \ times 10^{13} $ g高两个数量级，并且位于银河平面上方要高得多。获得的结果表明，AXP/SGR的主要特征是强磁场，而不是大时期。
The comparative analysis of parameters is carried out for two samples of radio pulsars. Objects of the first sample have periods P > 2 sec, the second is characterized by magnetic fields at the neutron star surface $Bs > 4.4\times10^{13}$ G. The main goal of this analysis is to find some differences between normal pulsars and anomalous X-ray pulsars (AXP) and soft gamma-ray repeaters (SGR) with the similar values of periods and magnetic fields. It is shown that the dependence of period derivatives on periods for pulsars with long periods is $dP/dt \propto P^{1.67}$. This means that we must search for another braking mechanism differing from the magnetic dipole one which gives $dP/dt \propto P^{-1}$ or use some specific distributions of parameters. On the other hand, radio pulsars with strong magnetic fields and AXP/SGR can be described by the magnetic dipole model. Radio pulsars with P > 2 sec have ages on average two orders of magnitude higher than objects with $Bs > 4.4 \times 10^{13}$ G and are located much higher above the Galactic plane. The obtained results show that the main feature of AXP/SGR is the strong magnetic field and not the large period.
