中子星制动机制的研究

发布时间：2018-05-14 06:34

本文选题：中子星 + 制动指数　；参考：《原子核物理评论》2013年01期

【摘要】：中子星的制动机制是中子星研究中的基本问题。磁偶极辐射模型给出中子星的制动指数为3,而所有观测到的中子星的制动指数都小于3,这表明中子星除磁偶极辐射之外还存在其他的转动能量损失方式。考虑中子星的转动动能损失来自:磁偶极辐射、由于单极感应引起的粒子流逃逸以及中子星和量子真空摩引起的能量损失。基于这3种辐射机制,给出了改进后的中子星能量损失功率的计算公式和周期对时间一阶导数与周期的依赖关系。考察了6颗中子星(J1119 6127,B1509 58,J1846 0258,B0531+21,B0540 69和B0833 45)的周期-周期一阶导数关系,制动指数、表面磁场强度以及磁倾角之间的关系。研究表明,星风效应中,真空间隙电势差为常数时磁倾角只能在有限范围内取值,而其他情况下磁倾角在0～90°之间连续取值。
[Abstract]:The braking mechanism of neutron stars is a basic problem in the study of neutron stars. The magnetic dipole radiation model shows that the braking index of the neutron star is 3, and the braking index of all the observed neutron stars is less than 3, which indicates that there are other rotational energy loss modes in the neutron star besides the magnetic dipole radiation. The loss of rotational kinetic energy of neutron star is considered from magnetic dipole radiation, particle flow escape caused by unipolar induction and energy loss caused by neutron star and quantum vacuum friction. Based on these three radiation mechanisms, the improved formula for calculating the energy loss power of neutron stars and the dependence of the period on the first derivative of time and the period are given. The relationship between the first derivative of cycle, braking index, surface magnetic field intensity and magnetic dip angle of six neutron stars J1119, 6127, B1509, 58J 1846, 0258N, B0531, 21C, B0540, and B0833, 45) has been investigated. The results show that in the star-wind effect, when the potential difference of vacuum gap is constant, the magnetic inclination can only be obtained in a limited range, while in other cases, the magnetic inclination can be determined continuously in the range of 0 ~ 90 掳.
【作者单位】：北京大学物理学院和核物理与核技术国家重点实验室;
【基金】：国家自然科学基金资助项目(10935001,10973002,10875003)~~
【分类号】：P145.6

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