Evolution implications of neutron star magnetic fields: inferred from pulsars and cyclotron lines of HMXBs
Evolution implications of neutron star magnetic fields: inferred from pulsars and cyclotron lines of HMXBs
复制标题
中子星磁场的演化意义：从 HMXB 的脉冲星和回旋加速器线推断
DOI：
10.1007/s10509-019-3690-1
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发表时间：
2019
影响因子：
1.9
通讯作者：
Diao Zhen-Qi
中科院分区：
文献类型：
--
作者：
Ye Chang-Qing;Wang De-Hua;Zhang Cheng-Min;Diao Zhen-Qi
中子星星的磁场演化一直是一个重要的研究课题，但至今仍未得到定论。在这里，我们分析了NS B-场推断的回旋共振散射功能（CRSFs）的高质量X射线双星（HMXBs）和磁偶极子模型的自旋下降的双星。我们发现32个NS-HMXB和28个有超新星遗迹的年轻超新星的B场都服从对数正态分布，平均值分别为G和G，统计检验进一步证实它们来自同一个连续分布。这些结果表明，这两种方法对上述两组样品的NS B场测量是可靠的。此外，由于NS-HMXB经历了没有吸积的正常恒星的自旋下降阶段，然后通过吸积的自旋上升阶段，它们的年龄应该是百万年（Myrs）左右。我们的统计事实表明，NS-HMXB的B-场几乎没有衰减，在其非吸积自旋下降阶段的100万年，以及在其吸积阶段的10.1万年。
The evolution of neutron star (NS) magnetic field (B-field) has long been an important topic, which is still not yet settled down. Here, we analyze the NS B-fields inferred by the cyclotron resonance scattering features (CRSFs) for the high mass X-ray binaries (HMXBs) and by the magnetic dipole model for the spin-down pulsars. We find that the B-fields of both the 32 NS-HMXBs and 28 young pulsars with the supernova remnants follow the log-normal distributions, with the average values ofG andG respectively, which are further verified to come from the same continuous distribution by the statistical tests. These results declaim that the two methods of measuring NS B-fields are reliable for the above two groups of samples. In addition, since the NS-HMXBs have experienced the spin-down phase as the normal pulsars without accretion and then the spin-up phase by accretion, their ages should be about million years (Myrs). Our statistical facts imply that the B-fields of NS-HMXBs have little decayed in their non-accretion spin-down phases of ∼ Myrs, as well as in their accretion phases of ∼0.1 Myrs.