论文标题
使用双磁性偶极模型解释磁铁SGR 0501+4516和1E 2259+586的高制动INDICE
Explaining high-braking indice of magnetars SGR 0501+4516 and 1E 2259+586 using the double magnetic-dipole model
论文作者
论文摘要
在本文中，我们使用Hamil等人（2016年）提出的双重磁性二极管模型（2016），我们将两个Magnetars SGR 0501 $+$ 4516和1E 2259 $+$ 586的$ N> 3 $归因于他们的倾斜角度。在此模型中，中子恒星内有两个磁矩，一个是由带电球的旋转效果，$ m_ {1} $产生的，另一个是由铁磁有序材料的磁化产生的，$ m_ {2} $。我们的计算表明，磁矩$ m_ {2} $将演变为与两个磁盘的自旋轴对齐，并导致其磁性倾斜角降低。 We also define a ratio $η=M_{2}/M_{1}$, which reflects the magnetization degree, and find that the values of $η$ of the two magnetars are about two-orders of magnitude higher than that of rotationally powered pulsar PSR J1640-4631 with $n=3.15(3)$, assuming that they have the same rate of decrease in their inclination angles.
In this paper, we attribute high braking indices $n>3$ of two magnetars SGR 0501$+$4516 and 1E 2259$+$586 to the decrease in their inclination angles using the double magnetic-dipole model proposed by Hamil et al.(2016). In this model, there are two magnetic moments inside a neutron star, one is generated by the rotation effect of a charged sphere, $M_{1}$, and the other is generated by the magnetization of ferromagnetically ordered material, $M_{2}$. Our calculations indicate that the magnetic moment $M_{2}$ would evolve towards alignment with the spin axis of the two magnetars, and cause their magnetic inclination angles to decrease. We also define a ratio $η=M_{2}/M_{1}$, which reflects the magnetization degree, and find that the values of $η$ of the two magnetars are about two-orders of magnitude higher than that of rotationally powered pulsar PSR J1640-4631 with $n=3.15(3)$, assuming that they have the same rate of decrease in their inclination angles.
